any plan or proposal that is grandiose, impractical, and usually unsolicited: You're always coming around here with your big ideas.
purpose; intention; aim: What's the big idea of shouting at me?
DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!
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Question 1 of 7
What does “vacillate” mean?
Origin of big idea
An Americanism dating back to 1920–25
Words nearby big idea
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020