second-guess

verb

sec·​ond-guess ˌse-kᵊŋ-ˈges How to pronounce second-guess (audio)
-kən(d)-
second-guessed; second-guessing; second-guesses

transitive verb

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 coachBruce Newman
also : to engage in such criticism of (an action or decision)
second-guess the general's strategy
2
: to seek to anticipate or predict
lived royally by his ability to second-guess the stock marketTime
second-guesser noun

Examples of second-guess in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
There’s no need to hunt down a law office, worry about upfront fees, or second-guess whether the attorney is legitimate. Daniel Fusch, USA Today, 6 June 2025 This could force hackers to second-guess their allies, and the anonymity of the dark web would become a threat. Can Yildizli, Forbes.com, 5 June 2025 Someday we Americans may stop quarreling over our response to the COVID-19 pandemic — lockdown orders, social distancing and so forth — but one category of debate may never become immune to second-guessing. Michael Hiltzik, Los Angeles Times, 5 June 2025 But checking her trial notes during deliberations the next day, Juror No. 1 began to second-guess her conclusion that the messages were junk. Alex Riggins, Mercury News, 2 June 2025 See All Example Sentences for second-guess

Word History

First Known Use

1941, in the meaning defined at sense 1

Time Traveler
The first known use of second-guess was in 1941

Browse Nearby Words

Cite this Entry

“Second-guess.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/second-guess. Accessed 14 Jun. 2025.

Kids Definition

second-guess

verb
sec·​ond-guess
ˌsek-ᵊŋ-ˈges,
-ən-
1
: to question or criticize actions or decisions of (someone) often after the results of those actions or decisions are known
2
second-guesser noun

More from Merriam-Webster on second-guess

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!