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Shared Prefixes Quiz #4

Each pair of words starts with the same prefix. Guess the prefix.
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Last updated: December 4, 2019
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First submittedApril 11, 2014
Times taken44,309
Average score57.1%
Rating4.26
6:00
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Words
Octopus, Octagon
Megabyte, Megaphone
Underbelly, Underbrush
Dystopia, Dyslexia
Heterosexual, Heterodox
Mistreat, Mischief
Extramarital, Extradition
Words
Antiaircraft, Antisocial
Decimate, Deciliter
Nanosecond, Nanotechnology
Hemoglobin, Hemophiliac
Quadratic, Quadricep
Psychopath, Psychiatry
Ultraviolet, Ultraorthodox
Words
Simultaneous, Simulacrum
Somnambulism, Somniferous
Epidermis, Epilogue
Pandemic, Panacea
Magnanimous, Magnitude
Memento, Memorize
Orthodox, Orthodontist
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49 Comments
+10
Level 76
Jul 23, 2014
Please also accept haemo-globin/philiac, which is how it is spelled outside the United States.
+2
Level ∞
Jul 23, 2014
Okay
+3
Level 83
Aug 19, 2023
Not spelled that way in Canada!
+5
Level 72
Aug 14, 2014
Please make more quizzes like this. I enjoyed it.
+20
Level 82
Nov 4, 2015
Anyone else read "globin" as "goblin"?
+3
Level 50
Feb 28, 2017
*raises hand*
+14
Level 80
Feb 28, 2017
I even typed "hob"
+9
Level 65
Oct 26, 2017
Now I want to make a D&D monster called a hemo-goblin.
+2
Level 74
Apr 17, 2020
I tried 'hob' first too!
+1
Level 71
Oct 14, 2020
YES I WAS SO CONFUSED WHEN I READ THAT AT FIRST
+1
Level 74
Feb 20, 2023
Yep, me too
+3
Level 80
Feb 28, 2017
Wouldn't of these technically be roots and not prefixes? I'm a bit of a novice in etymology.
+5
Level 51
Feb 28, 2017
Using metric units isn't really fair because any metric prefix works with them
+15
Level 50
Feb 28, 2017
But not always with both words. Kilobyte, yes, kilophone, no....
+14
Level 15
Dec 1, 2018
So THAT'S why nobody ever answers the centiphone when I call!
+6
Level 92
Jan 31, 2020
Never use the teraphone. The government will be listening.
+1
Level 67
Apr 21, 2023
It's misleading because they use the USA spellings of metric, so it's a bit of an extra thinking process for non-Americans too.
+6
Level 70
Mar 1, 2017
Kept thinking "Diagon" for the __agon one... Taking too many Harry Potter quizes on here I think!
+4
Level 67
Mar 3, 2017
It didn't help that we spell deciliter "decilitre" here in Australia. Still managed 18 despite the Americocentric spelling.
+2
Level 70
Mar 4, 2017
Exactly the same here. Had to groan that I didn't think of litre being liter once I saw it.
+3
Level 67
Apr 21, 2023
I think the entire world outside of the USA spells it "litre", so this really should be changed for clarity.

"liter" doesn't really register and the rhythm of the word would be totally different for "deciliter"

+5
Level 60
Aug 19, 2023
?? I spell it litre, but I definitely pronounce it liter... Doesn't everyone?

It is an American website, what do you expect? Cut the guy some slack

+1
Level 85
Jan 23, 2024
Yeah, I agree Jon. It isn't really so hard to understand, is it?

liter/litre

meter/metre

+12
Level 74
Nov 17, 2018
The correct spelling is quadriceps. It's already singular, so taking the s off is just a misspelling.
+4
Level 56
Oct 14, 2020
Its wierd the may my brain can't unsee wrong answers - once it allocates Aca to demic and Lat to itude its really difficult to make it blank that out and restart.
+1
Level 76
Aug 16, 2025
latitude longitude, destitute, servitude, solitude.. all of them went through my head ( several times..), never got to the one they were looking for.
+24
Level 81
Oct 14, 2020
The prefix PARA also works for both SEXUAL and DOX
+2
Level 68
Oct 14, 2020
maybe is it harder for english speaking people, but i found it easier (i'm frenchspeaking) probably because of the latin and greek roots
+1
Level 64
Oct 14, 2020
Phew - that was hard! Enjoyed it though.
+4
Level 67
Oct 14, 2020
I really liked the quiz. There is just one thing that bugs me: The "-opus" vs. "-agon" clue is a bit misleading, as the prefix in that case is octo- or octa- and the rest of the word should be -pus or -gon.

Still, it is the most guessed...

+1
Level 64
Oct 14, 2020
I would like to thank Pumat Sol for helping me with this quiz.
+2
Level 72
Oct 14, 2020
Not too difficult!
+8
Level 46
Oct 14, 2020
Shouldn't micro be allowed for second/technology as not only nano is a working prefix for those words?
+3
Level 77
Oct 14, 2020
Orthodox is used twice.
+3
Level 45
Oct 15, 2020
Good quiz apart from the US spelling eurgh
+2
Level 60
Aug 19, 2023
Underbrush! I've learnt a new word. Disappointingly it turns out not to be the opposite of "over the brush"
+1
Level 77
Aug 19, 2023
In "The World According to Garp," one of the characters, a child, thinks that the undertow he is told to watch out for when swimming in the ocean is "The Undertoad," a frog of some sort that grabs hold of swimmers and pulls them to their doom. That's one of those images that, once you hear it, is hard to shake.
+1
Level 84
Aug 19, 2023
Potbelly/Potbrush? Parasexual/paradox?
+2
Level 63
Aug 20, 2023
Potbrush doesn't make sense.
+3
Level 80
Aug 19, 2023
Accept pork?
+1
Level 33
Aug 19, 2023
microbyte and microphone ??????
+2
Level 63
Aug 20, 2023
Microbyte doesn't exist, but I thought the same.
+2
Level 57
Aug 19, 2023
microsecond and microtechnology should also be acceptable.
+3
Level 63
Aug 20, 2023
Microsecond / Microtechnology and Parasexual / Paradox are still missing.
+2
Level 34
Jan 15, 2024
What about parasexual/paradox?
+4
Level 76
Nov 21, 2024
Longanimous/longitude are both words as well
+2
Level 73
Aug 16, 2025
What about:

Microsecond/microtechnology

Parasexual/paradox

Longanimous/longitude

+1
Level 60
Aug 16, 2025
More people got Somnambulism than Simultaneous? Never would have expected that!
+1
Level 76
Aug 16, 2025
was stuck on subcutaneous