know-it-all
noun
: one who claims to know everything
also
: one who disdains advice
know-it-all
adjective
Examples of know-it-all in a Sentence
Recent Examples on the Web
Her uncaring parents were all too happy to have their loudmouth, know-it-all daughter off their hands.
—
Greg Evans, Deadline, 12 June 2025
The actor played know-it-all postal worker Cliff Clavin through the series’ first nine seasons.
—Lauren Coates, Variety, 20 May 2025
But no one likes a know-it-all, least of all Tzarina, who brings an attitude to match Lara’s to their conversation.
—Rafaela Bassili, Vulture, 22 Apr. 2025
Gemini: Redmond As the fast-talking book agent who reps many potential writers at Empirical Press and Millennial, Redmond is the know-it-all of the literary industry and community.
—Lisa Stardust, People.com, 31 Mar. 2025
See All Example Sentences for know-it-all
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.
Greg Evans, Deadline, 12 June 2025
The actor played know-it-all postal worker Cliff Clavin through the series’ first nine seasons.
—Lauren Coates, Variety, 20 May 2025
But no one likes a know-it-all, least of all Tzarina, who brings an attitude to match Lara’s to their conversation.
—Rafaela Bassili, Vulture, 22 Apr. 2025
Gemini: Redmond As the fast-talking book agent who reps many potential writers at Empirical Press and Millennial, Redmond is the know-it-all of the literary industry and community.
—Lisa Stardust, People.com, 31 Mar. 2025
See All Example Sentences for know-it-all
Cite this Entry
“Know-it-all.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know-it-all. Accessed 30 Jun. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share