"Bi" Vocabulary Words

Based on the definitions, guess these words that start with the prefix "Bi".

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Last updated: January 25, 2023

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First submitted	May 4, 2010
Times taken	52,196
Average score	65.0%
Rating	4.05

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Definition	Word
Two-wheeled conveyance	Bicycle
Telescope for two eyes	Binoculars
One with two wives	Bigamist
Event which combines skiing and shooting	Biathlon
Occurring every 14 days	Biweekly
200th anniversary	Bicentennial
Disorder previously known as manic depression	Bipolar
Speaking two languages	Bilingual
To cut in two	Bisect
Type of mollusk	Bivalve

Definition	Word
Having two legislative houses	Bicameral
Glasses with different lenses for near and far	Bifocals
Tooth between the incisors and molars	Bicuspid
Supported by both Republicans and Democrats	Bipartisan
Two-headed muscle of the upper arm	Biceps
Two-footed animal	Biped
Older aircraft with two sets of wings	Biplane
Number system using only 0 and 1	Binary
One attracted to either men or women	Bisexual
Like a trade agreement between two parties	Bilateral

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100 Recent Comments

Level 77

Jun 2, 2013

For info, the British word for a 200th anniversary is 'bicentenary'.

Level ∞

Jun 3, 2013

That one will work now. Thanks,

Level 80

Jan 26, 2023

Bicentennial is an adjective not a noun though, which is why bicentenary is the actual answer to the question.

Level 63

Mar 4, 2023

Bicentennial is also a noun in American English, as nonsensical as that seems to Brits like us.

Level 59

Jun 3, 2013

Can you accept bicentenary for bicentennial?

Level 59

Oct 18, 2013

More people knew about "bisexualism" than bicycles? Weird.

Level 72

Dec 19, 2018

Many maybe tried bike

Level 59

Mar 6, 2023

A. Bi is already a common abbreviation for Bisexual so it was in the forefront of many’s minds already

B. The Bicycle question was worded weirdly and wasn’t as immediately obvious as the bisexual question.

Level 44

Apr 3, 2014

Would occurring every 14 days not be " bimonthly" ? Biweekly implies something is occurring twice a week ?

Level 37

Jul 29, 2014

if something occurs on the 1st, 15th and 29th its is biweekly not bimonthly.

+16

Level 70

Jan 27, 2015

The proper English word would be 'fortnightly' - nice and clear. Shame it doesn't begin with 'bi-'.

Level 73

Jan 26, 2023

LOL fortnightly is clear?

Level 56

Mar 4, 2023

Fortnightly - occurring every FOURteen NIGHTs. Pretty straight forward and logical to me.

Level 83

Sep 28, 2023

it's clear if the word 'fortnight' is in your vocabulary, but it seems to be strangely absent from most Americans'

Level 68

Jan 10, 2016

Semi-monthly is twice per month, which is close to biweekly, but not the same. If you get paid semi-monthly, you get 24 paychecks per year. If you get paid biweekly, you get 26 paychecks per year.

Level 25

Mar 4, 2023

Absolutely.

Level 58

Nov 21, 2016

Not at all. Biweekly means every two weeks. Bimonthly means every two months. I've subscribed to enough bimonthly magazines to know.

Level 75

Dec 14, 2016

Bimonthly can mean both! https://www.merriam-webster.com/dictionary/bimonthly

Level 66

Mar 4, 2023

To me bi-weekly is twice per week, so I agree. Every 14 days is fortnightly.

Level 61

Apr 29, 2014

Twice a week would be semi-weekly, not bi-weekly

Level 84

May 8, 2014

Really should not accept bicep. The singular is biceps.

Level 72

Apr 9, 2019

Agreed

Level 81

Jan 27, 2023

yep

Level 74

Mar 4, 2023

The S is necessary for binoculars but not for biceps? Go figure.

Level 55

Dec 20, 2014

I would say "supported by both Republicans and Democrats" is the least common usage of that word, and mention of Reps and Dems makes it too USA-specific.

The word can mean "comprising both political parties" when referring to committees, or even "independent of any one political party".

+10

Level 81

Nov 14, 2020

Agreed. "Supported by two/both parties" is a far more accurate definition, plus it makes it geographically-neutral. The word is used all over the world, and is in no way tied to the US political system.

Level 76

Aug 13, 2021

Agreed.

Level 73

Feb 16, 2023

Hear hear. I missed this one because of the overly narrow specification, though I'm familiar with bipartisanship. Let all our parties work together to encourage a tweak to the clue :)

Level 66

Mar 11, 2023

I agree, but... As a point of order, "independent of any one political party," is NON-partisan, not bipartisan. I know that is slightly pedantic, but in a few instances it can really make a difference.

+19

Level 51

Apr 24, 2015

"One attracted to either men or women" technically means someone who is only attracted to one sex or the other. I think you mean "One attracted to both men and women."

Level 73

Feb 16, 2023

I agree. It's probably best to phrase it more specifically as, "one who can be attracted to men or women," or "one who can be attracted to both men and women."

Level 76

Mar 4, 2023

Your second version is fine. Your first has the same problem as the actual hint.

Level 76

Mar 4, 2023

Right. It's not either/or. It's both/and.

Level 70

Aug 19, 2015

Is anything bipartisan in the US anymore?

Level 51

Nov 29, 2017

Net neutrality.

Level 89

Feb 8, 2023

Love of turning everything into a conspiracy theory.

Level 40

Mar 4, 2023

everything is a conspiracy

Level 75

Mar 4, 2023

Including that?

Level 83

Nov 30, 2015

I only got bivalve because of a long discourse in a Jules Verne book about mussels. Learnt a lot of entirely pointless terms in both French and English from that one.

Level 21

Dec 5, 2015

Can BIrd be a possible answer for 2-Footed animal ?

Level 63

Aug 10, 2016

That's what I first guessed but birds have claws as "feet".

Level 47

Feb 21, 2018

After a quick google search of 'do birds have feet' I found that almost all of the sources refer to the things on the end of birds' 'legs' as feet. It also referred to the appendages as toes.

Level 76

Mar 4, 2023

Bi- is not a prefix in bird.

Level 85

Oct 13, 2017

Bisect. The root of why everybody mispronounces the word dissect. And now through ubiquitous conflation, DYE-sect has now become an acceptable pronunciation. SMH.

Level 72

Apr 9, 2019

How about bicycle, it is pronounced like it is bycicle...

Level 67

Oct 20, 2017

Would you believe I missed 'bicentennial'? And I spelled 'bipartisan' with a 'z'. A 'z' goddamnit!

+12

Level 57

Oct 20, 2017

Bisexual means to be attracted to 2 genders. Those genders don't necessarily have to be men and women, and the wording of the clue implies that a bisexual person is attracted to either men or women, when they would actually be attracted to both at the same time

+17

Level 74

Aug 7, 2018

There are only 2 genders.

Level 74

Aug 7, 2018

*grabs popcorn*

Level 76

Mar 4, 2023

Put it down. The instigator doesn't get the popcorn.

+10

Level 43

Sep 20, 2018

Wrong

Level 65

Mar 4, 2023

You either have a Y chromosome (male) or you don't (female), which accounts for abnormal genetic combinations (not XX or XY). So yeah, it's as binary as it can get

Level 78

Mar 4, 2023

Any geneticist will tell you it's actually a lot more complicated than that.

Level 47

Nov 3, 2021

incorrect

Level 66

Feb 1, 2023

Well, there are definitely only two sexes.

Level 73

Feb 16, 2023

@Charliezard Tell that to intersex folks.

Level 68

Feb 21, 2018

Bigfoot for 2-legged animal?

Level 85

Feb 3, 2023

After carefully researching this topic, I found that the name actually refers to Sasquatch's having 2 gfoots, not legs.

Level 35

May 22, 2018

Could you specify in the italics if it's just the prefix bi- or words that start with bi that don't mean two?

Level 65

Mar 4, 2023

All do in the list.

Level 81

Jul 10, 2018

I can't believe nobody pointed this out yet, but bipolar and manic depressive are not the same thing. I had this on one of my April Fools quizzes.

Level 77

Jan 25, 2023

Bipolar disorder and manic depression are indeed the same thing. (I've just looked up your quiz. Your trick question leaves out the depression bit.)

Level 73

Jan 26, 2023

Yes. The two describe the same condition. There are many sub-variations but only one condition.

Level 78

Jul 10, 2018

I got them all except for the tooth. I must say, on this side of the Atlantic (E. side), I've never heard them called that - they are premolars. Indeed, it is normal for some of them to have more than two cusps.

Level 83

Jan 26, 2023

I only got it because of Little Shop of Horrors

“I thrill when I drill a bicuspid

It’s swell, though they tell me I’m mal-ad-juh-usted…”

Level 73

Feb 16, 2023

Ahhaha! Thank you for evoking this bit of Steve Martin performance genius :)

Level 74

Aug 7, 2018

Accept Bigamous for Bigamist?

Level 76

Aug 13, 2021

Yeah, I was confused as to why it didn't accept "bigamous". It should.

Level 73

Feb 1, 2023

And or Bigamy.

Level 50

Feb 13, 2019

6% didn't know bisexual? I thought it might have been 50/50

Level 72

Apr 9, 2019

Is there a joke somewhere in there?

+17

Level 72

Apr 9, 2019

Bisexual means exactly the opposite of being either attracted to men, or to women. It means to be attracted to both. If you are attracted to either men, or women, you are heterosexual or homosexual depending on your own sex. Quite a big mess/mix up imho. (Like saying that a guy that likes women is homosexual)

Level 89

Mar 31, 2020

I thought the same thing. The clue should read "attracted to both men and women."

Level 77

Feb 28, 2020

I have never heard the term "Bicuspid" I have learned and always heard them called "canines"

Level 85

May 8, 2022

The bicuspids are, more specifically, between the canines and the molars and are usually referred to as premolars.

Level 69

May 10, 2020

How tf did I forget bicicle

Level 79

Jan 25, 2023

because it is spelled bicycle?

Level 44

Dec 21, 2020

Missed bigamist because I kept thinking bigamy 🤦

Level 79

Jan 25, 2023

You should have consulted with your sister-wives before answering. :)

Level 25

Mar 4, 2023

Same. I typed in 'Bigamy' 'Bilygamy' 'Bigamous' 'Polygamy' and 'Polygamous' before I ran out of time.

Level 61

Jan 25, 2023

maybe accept bigamous?

Level ∞

Jan 25, 2023

That will work now.

Level 66

Jan 25, 2023

Bigamy should work, because that is what I typed :D

Level 79

Jan 25, 2023

could "to cut in two" also be 'bifurcate'?

Level 92

Jan 25, 2023

Perhaps. In my mind bifurcation typically implies a separation and also a copying, so you end up with 2 wholes instead of 2 halves. That may be entirely connotation though, and not in the denotation of the term.

Level 85

Jan 25, 2023

To bifurcate is to fork or split into two branches which are still attached. Like a snake’s tongue.

Level 66

Jan 25, 2023

The bigamist clue really threw me because it is not a correct definition. A bigamist is someone who illegally has more than one spouse concurrently. The spouses don't have to be wives, and there can be more than two. Legality is an essential part of the definition, because in some times and places multiple marriage has not been classed as bigamy.

Level 77

Jan 26, 2023

Did you manage to guess the right answer, despite the colossal red herrings?

Level 74

Jan 26, 2023

I think bicuspids are the ones between molars and canines, not incisors.

Level 56

Mar 4, 2023

Couldn't the trade agreement also be "binding"

Level 65

Mar 4, 2023

It comes from bind-ing, not bi-nding or bi-inding. Not the root for 2.

Level 73

Mar 4, 2023

And if you are Lorelei Lee (played by Marilyn Monroe in "Gentlemen Prefer Blondes"), does singing "Diamonds Are A Girl's Best Friend" make you blingual?

Level 63

Mar 4, 2023

Small error I’m slightly surprised hasn’t been noticed yet: “Older aircraft with twos sets of wings” seems to have pluralised the number as well, like it’s been translated overly-literally from a language like French or Spanish.

Level 41

Mar 4, 2023

Aw can you accept "bigamy" for "bigamist"

Level 25

Mar 4, 2023

Please do.

Level 74

Mar 4, 2023

Is there a lack of consistency if you accept bicep for biceps and bifocal for bifocals but not binocular for binoculars?

Level 59

Mar 6, 2023

You don't accept pant for pants or scissor for scissors.

Level 78

Jul 20, 2023

Then why accept "bicep" for "biceps" and "bifocal" for "bifocals"?

Level 78

Jan 31, 2024

because there is no such word as binocular. I mean there is, but it's an adjective and not the noun form that the clue is asking for. Same for bifocals. If it accepts bifocal, that seems like an error to me.

Level 78

Jan 31, 2024

Please accept bifurcate in addition to bisect. Both mean to divide in two.

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