If a sign says "Swimming Prohibited," don't go for a dip. It's not allowed. To prohibit is to forbid, or to disallow something.

In school, you are prohibited from leaving the premises before the end of the school day. The school administration also prohibits smoking and chewing gum. In 1920, it became illegal to sell alcohol in the United States. This time period when alcohol was prohibited is known as the era of Prohibition. Famously Prohibition did not work. When you prohibit something, you often make it seem more appealing.

Definitions of prohibit

v command against

disallow, forbid, interdict, nix, proscribe, veto
allow, countenance, let, permit
consent to, give permission
allow, grant
let have
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prohibit especially by legal means or social pressure
bar, debar, exclude
prevent from entering; keep out
issue an injunction
criminalise, criminalize, illegalise, illegalize, outlaw
declare illegal; outlaw
ban, censor
forbid the public distribution of ( a movie or a newspaper)
Type of:
command, require
make someone do something

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