put on one's thinking cap
Think or reflect seriously, as in A new slogan? I'll have to put on my thinking cap for that. This term originated in the late 1800s and replaced considering cap, which dates from the early 1600s.
QUIZZES
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Question 1 of 9
You may have read the word "simmer" in a recipe or two, but what does it really mean?
Words nearby put on one's thinking cap
put one's oar in, put one's shoulder to the wheel, Putonghua, put on hold, put on ice, put on one's thinking cap, put on the dog, put on the feed bag, put on the map, put on the spot, put on to
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.