be on


Be taking medication or an illegal drug, as in Are you on some antibiotic? or He was definitely on narcotics when it happened. [1930s]

Words Nearby be on

Other Idioms and Phrases with on, be

be on

Be taking medication or an illegal drug, as in Are you on some antibiotic? or He was definitely on narcotics when it happened. [1930s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

How to use be on in a sentence

  • "Very well," said Maud in a your-blood-be-on-your-own-head voice.

    Wanted: A Husband | Samuel Hopkins Adams