high on

high on idiom
  1. Under the influence of alcohol or a drug. For example, I think he got high on marijuana before he came to the party. [c. 1930]
  2. Very enthusiastic about, as in They were high on video games. [1940s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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