Definition of second-guess
second-guessed;
second-guessing;
second-guesses
1
: to criticize or question actions or decisions of (someone) often after the results of those actions or decisions are known
- meet almost every morning and, over coffee, second-guess the local coach
- —Bruce Newman
- second-guess the general's strategy
2
: to seek to anticipate or predict
- lived royally by his ability to second-guess the stock market
- —Time
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