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not put something past someone

not put something past someone idiom
Consider someone capable of doing something, especially something bad. For example, I wouldn't put it past him to tell a lie or two. This expression uses past in the sense of “beyond.” [Late 1800s]

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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