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put to it, be

put to it, be idiom

Be confronted with a severe difficulty, as in I was put to it to finish this book on time. This usage is derived from the active sense of put to it, that is, “force or challenge someone to something.” [c. 1600]

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.