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open season on
A period of unrestrained criticism or attack on something or someone, as in
During an election year it's open season on all officeholders
. This expression alludes to the period during which one may legally hunt or fish.
; c. 1900
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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