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Words that End in X

Based on a definition, can you guess these words that end in the letter X?
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Last updated: June 23, 2015
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First submittedJanuary 25, 2013
Times taken92,729
Average score65.0%
Rating4.25
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Definition
Word
To cast a spell upon
Hex
Levy owed to the government
Tax
Opposite of prefix
Suffix
Coitus
Sex
Opposite of wane
Wax
Opposite of concave
Convex
Depiction of Jesus's cross
Crucifix
House divided into two apartments
Duplex
Mixture of fat and flour
Roux
Variety of medium-sized wild cat
Lynx
Natural rubber product
Latex
One of three divisions of an insect body
Thorax
Shape of a spiral staircase or strand of DNA
Helix
Outer layer of the cerebrum
Cortex
Conforming to traditional religious doctrine
Orthodox
Where two lines meet in a polygon
Vertex
Has the head of a man and the body of a lion
Sphinx
Human organ with no known function
Appendix
Suitable for either gender
Unisex
The tailbone
Coccyx
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88 Comments
nettybet
+9
Level 77
Apr 21, 2013
Good quiz
KatM
+9
Level 22
Apr 21, 2013
Haha, there is also the "directrix" in maths, the line perpendicular to the axis of symmetry of the parabola and equal in length with the vertex to the focus of the parabola.
Jerry928
+31
Level 76
Jun 30, 2014
OK, if you can fit all that in the clue box then let's add it to the next quiz
sierraistheshiz
+36
Level 19
Apr 21, 2013
Sufix should be accepted for suffix, why? Because I can't spell it right and I'm mad.
DeusCaritasEst
+41
Level 54
Sep 22, 2015
This is probably the best explanation that a certain spelling should be accepted I have seen on here, because it's so damn true.
tschutzer
+16
Level 93
Jun 25, 2015
"Natural Rubber product"? Durex! :-P
IsleAuHaulte
+4
Level 92
Jan 5, 2019
Oddly their most popular size is XL.
Nathaniel
+5
Level 77
Apr 16, 2019
the validity of that depends on what you define as XL, maybe they want to compliment the buyer
Gebb
+3
Level 65
Jun 17, 2022
Maybe their XL size differs in each country, to compliment the buyer. That would be a very good marketing strategy
Danno
+3
Level 67
Jun 19, 2022
I was trying Spandex.
In2restingFacts
+3
Level 27
May 5, 2025
i thought Pyrex
mamad679
+3
Level 61
Sep 12, 2015
what about manx for cat
TheWombat
+3
Level 72
Sep 22, 2015
It's Manx Cat, though, not just Manx. And it's not wild and it's not medium-sized.
jennyfleur
+3
Level 65
Feb 8, 2019
Or Manx for demonym/language of a British Crown Dependency in the Irish sea...
QuizWol
+8
Level 66
Sep 15, 2015
Sphinx has the head of a women doesn't it?
Carry
+7
Level 63
Aug 25, 2016
In Greek mythology yes in Egyptian mythology not necessarily.
Kcmowreckem
+8
Level 58
Sep 22, 2015
Appendix has a function. Works in the immune system.
beccimoo
+3
Level 55
May 22, 2016
Only a theory, not proven.
richiesyxx
+7
Level 74
Jun 17, 2022
So is gravity, but the current theory works better than any other competing theory. The previous prevailing explanation of it being vestigial (and serving no function) is also ‘only a theory,’ but the common practice is to assume the correctness of the currently prevailing theory until if/when a more sound explanation arises. If we assume everything to be wrong until proven, we end up in a paradox in which the appendix does and doesn’t serve a purpose because each theory must be wrong, on account of neither being proven.
roleybob
+14
Level 73
Jun 17, 2022
^^When used in a scientific context, the word "theory" should never be immediately preceeded by the words "only a"

^Paradox would be a good one to add

mjsinn
+2
Level 67
Jun 17, 2022
nothing in science is ever proven.
BrennoAU
+11
Level 42
Jun 4, 2020
The appendix in most animals, called the caecum in anything that actually uses the thing, has a very big role in digestion. In humans it is a storage place for beneficial gut bacteria so I would argue it does have a function
LarryLovage
+9
Level 55
Sep 22, 2015
The one that surprised me is no Phoenix! Whether mythical beast or American capital, an easy one to clue.
Dollyfroggy
+1
Level 63
Sep 6, 2024
Probably too similar to sphinx.
JonesBones
+2
Level 42
May 5, 2025
lynx and sphinx are pretty similar imo, I don't see the issue
evacooper
+4
Level 50
Sep 22, 2015
i am orthodox and i didn't get that one...
mikeb
+14
Level 65
Sep 22, 2015
Maybe you need to reform!
DeusCaritasEst
+3
Level 54
Sep 22, 2015
Well, I think it's referring to "orthodox" with a lowercase "o", not "Orthodox" with a capital "o", as in "Eastern Orthodox" or "Greek Orthodox." (Not that those names didn't come from the little "o" meaning of orthodox, but you know what I mean...).
mikeb
+1
Level 65
Sep 23, 2015
Not really!
evacooper
+3
Level 50
Oct 9, 2015
i am an orthodox jew though.
BlackLab
+15
Level 66
Sep 22, 2015
postfix is an acceptable answer. It is synonymous with Suffix. It is a less common word for suffix. Plus, it ends with x.
jsway1
+2
Level 70
Jun 5, 2024
Yes, I agree postfix should be accepted. In computer science, postfix is the opposite of prefix (with infix sometimes used for being in the middle).
Roxy7699
+6
Level 28
Sep 22, 2015
Only got 10/20. This was too COMPLEX lol
Roxy7699
+3
Level 28
Sep 22, 2015
Plus I missed the best one of all, Sex.
PoetsCorner
+9
Level 87
Nov 2, 2021
I miss it too.

(Oh! But I didn't miss it in this quiz.)

SneakCheetah263
+4
Level 47
Feb 11, 2025
buddy calm down💀
DonTheLamplighter
+15
Level 87
Oct 7, 2016
Can't figure out why I got 0. Just too complecks.
IsleAuHaulte
+3
Level 92
Jan 5, 2019
Nix
ponnuki
+8
Level 57
Sep 25, 2015
In computer programming there is a prefix notation, the opposite of which is called postfix.
TheSaxyMan
+6
Level 55
Feb 13, 2016
In the apartment question, I thought the answer was complex. Kind of like an apartment complex
Freestatebear
+2
Level 88
Feb 9, 2018
Here in Maryland, most duplexes aren't apartments (rentals); they're owned houses, complete with mortgages, etc. They're much like single-family houses, except they have a common dividing wall down the middle, usually built of heavy masonry to try to contain fires.
AbiA
+5
Level 88
May 7, 2022
What you describe is called a pair of semi-detached houses in the UK.
Cordelia75
+1
Level 55
Jun 17, 2022
In the Philadelphia PA area they are known as twins and each side can be sold separately.
CamelSupplier
+1
Level 28
May 8, 2025
Apartment complex? I find it quite simple
Comorbid
+2
Level 29
Nov 18, 2016
"Transfix" should work for the first one too.
blinky
+8
Level 57
Nov 25, 2016
Kept trying Asterix, Obelix, Dogmatix, Vitalstatistix, Unhygenix...
Suzyhomemaker
+4
Level 59
Feb 9, 2017
No. Crucifix is crucifix. If you took a long time to spell it, it's because you don't know how to spell it. What about sphynx? Isn't that an acceptable spelling?
PantsLobbyist
+4
Level 99
Nov 15, 2017
I was about to say the same thing, I tried Sphynx three times before using an "I" instead.
LVSAS
+6
Level 43
Feb 9, 2018
Phalanx is a good one
divantilya
+3
Level 36
Feb 9, 2018
A duplex is one apartment on two levels. Usually with the living room, dining room, kitchen and perhaps a powder room on the main floor

and the bedrooms and full baths on the upper floor.

Malbaby
+9
Level 70
Feb 10, 2018
I don't think that is the real estate definition of Duplex, I think the quiz question is correct.
divantilya
+1
Level 36
Mar 31, 2018
So I guess I just pulled it out of thin air then, even though I recently bought a duplex apartment from a real estate agent.
jkabq
+3
Level 67
Apr 10, 2018
I would assume the term could vary by city, county, state, country, etc. or whatever governing body defines it. Including down to the real estate contract that defines it to the satisfaction of the parties involved.
Margles1
+3
Level 40
Feb 9, 2018
I have never heard of “roux”.
Sealantmajor
+2
Level 55
Feb 10, 2018
Same here, I think it's more of French cuisine
PoetsCorner
+5
Level 87
Nov 2, 2021
You don't cook at home much? I make sauces and thicken soups by making a roux all the time.
Creo
+5
Level 48
Dec 12, 2018
I know it as the name of a Rubik's Cube method, named after Gilles Roux
tetraaa
+3
Level 33
Jun 18, 2022
cfop is better
Sibawayh
+3
Level 45
May 24, 2018
Only 51% know what a sphinx is?
Sifhraven
+1
Level 76
Dec 14, 2018
yea I was very surprised at how low that one was
TWM03
+4
Level 72
Feb 1, 2020
I would imagine quite a few people tried "sphynx", which isn't accepted.
Sifhraven
+4
Level 76
Mar 3, 2020
Yea, but when that doesnt work, wouldnt they try sphinx? You would think so.
mrputter
+5
Level 89
Jun 17, 2022
In my case, "Sphinx" doesn't readily occur as a valid spelling.

I tried "Sphynx" a couple of times, it didn't take, so I shrugged and figured I was on the wrong track (because the head was a woman's or something? I dunno). "Sphinx" didn't occur to me at all.

I finally did get it, in the dying seconds, after spending a couple of minutes wracking my brains for an answer to that one last question. Finally, with about 3 seconds to spare, I typed "sphinx" in, completely not expecting to get it right, but more out of desperation because I had no other ideas.

TL;DR "Sphynx" should absolutely be accepted as a type-in.

jrroell
+1
Level 55
Oct 27, 2018
kind of surprised suffix is the most guessed
Creo
+5
Level 48
Dec 12, 2018
haha, said sex for "suitable for either gender" but ended up in the the other one
Sifhraven
+4
Level 76
Dec 14, 2018
syntax and paradox would be a nice one for this quiz and flummox ( had to check if it was written with and x cause I have only heard it, never seen i written, but it is :) ). (maybe flax, minx, anticlimax)
huw1
+3
Level 78
Feb 1, 2020
A spiral staircase is not a helix, it's a spiral.
tom88
+4
Level 77
Feb 3, 2020
Definition of helix: "A helix (/ˈhiːlɪks/), plural helixes or helices (/ˈhɛlɪsiːz/), is a shape like a corkscrew or spiral staircase."
richiesyxx
+2
Level 74
Jun 17, 2022
Yeah, it’s the other way round, a spiral staircase is not actually a spiral, it’s a helix. Because the English language is designed to mess with people.
SpartanLlama
+1
Level 79
May 10, 2020
Missed duplex and roux, remembered coccyx at the very last second before I gave up
westorchestor
+1
Level 39
Apr 21, 2021
The appendix' function is known, it's just not useful anymore. It was for processing raw meat
Murphster45
+1
Level 97
Apr 21, 2021
Kept on trying to spell Roux like “reux”, “ruex”, “roix” lol. Good quiz
hirsutebodkin
+5
Level 57
Aug 24, 2021
'Either' gender? You'll be paid a visit by the political correctness police if you're not careful ;-)
jmellor13
+3
Level 68
Jun 17, 2022
I saw that too and had the exact same reaction. What a weird time we live in.
richiesyxx
+4
Level 74
Jun 17, 2022
I thought perhaps that was not the best thread to be tugging at on here. We wouldn’t want this turning into the comment section of a Ben Shapiro YouTube video…
TWM03
+5
Level 72
Aug 24, 2021
The appendix is now believed to have a function relating to the gut microbiome: Source. The proposition that it has no function seems implausible given that it is often infected, causing serious disease. On the other hand, the coccyx has no known function aside from the common function of blood cell production shared by all bones.
jbro
+2
Level 76
Jun 17, 2022
can you accept hoax for hex
elcampeador
+3
Level 77
Jun 21, 2022
Those are different words.
Dollyfroggy
+2
Level 63
Sep 6, 2024
I interpreted the comment as a statement about magic being fake.
toast1
+2
Level 36
Aug 19, 2022
box
EmreBozkurt
+1
Level 67
May 11, 2023
Idea : Xerox / American Company
shrekcena
+1
Level 60
Oct 15, 2024
Learned I can't spell roux lol. Tried every other vowel combo

Also, the appendix does have a purpose with regards to gut bacteria

PolPetrol
+2
Level 59
Dec 11, 2024
The word for "House divided into two apartments" means something entirely different where I live.

It means "one apartment spread out over two floors".

erikj
+1
Level 67
May 5, 2025
it's always such a rewarding feeling when you finish the quiz and you see that you knew five more answers than the previous time you took it. The joy of learning!
Marvo7
+1
Level 66
May 5, 2025
A crucifix is only a crucifix if it has a figure of Christ nailed to the cross.
mteagle128
+1
Level 62
May 6, 2025
So all those other people who were nailed to a cross weren't crucified?
DocEckleburg
+1
Level 68
May 6, 2025
Just found out I've been spelling roux incorrectly forever, read the question and thought "well I only know that as a rue, no x's there, must have another name I don't know." Now realise that I have been calling my white sauce prep a 'street' my whole adult life!
keagler
+1
Level 23
May 7, 2025
please put sphynx as an answer for sphinx. that's how most people spell it
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