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busy as a beaver

busy as a beaver idiom

Also, busy as a bee. Hardworking, very industrious, as in With all her activities, Sue is always busy as a bee, or Bob's busy as a beaver trying to finish painting before it rains. The comparison to beavers dates from the late 1700s, the variant from the late 1300s. Also see eager beaver; work like a beaver.

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.