slack-jawed

adjective

With the mouth in an open position and the jaw hanging loosely, especially as indicating bewilderment or astonishment.

Meanings

adjectiveslack-jawed (comparative more slack-jawed, superlative most slack-jawed)

comparative more slack-jawed · superlative most slack-jawed · alternative slackjawed

  1. With the mouth in an open position and the jaw hanging loosely, especially as indicating bewilderment or astonishment.

    The Pudgelys and the Pinkhearts and the Roundasses are all staring at her, slackjawed.

    1992, Neal Stephenson, Snow Crash, New York: Bantam Books, →ISBN, page 33
    1 more example

    For one frightful moment there was no sound; even the men's breathing was hushed, and they sat slack-jawed, stunned, half-minded to believe this some hideous, incredible jest.

    1911, Rex Ellingwood Beach, chapter 26, in The Ne'er-Do-Well

    Synonyms: dazzled, dumbfounded, open-mouthed, stunned

  2. broadlyUnsophisticated or unthinking; dimwitted in appearance.

    She brought to the stage the barefoot, slack-jawed frontiersmen found on postcards in every convenience store and tourist trap in the Ozarks.

    2002, Brooks Blevins, Hill Folks: A History of Arkansas Ozarkers and their Image, →ISBN, page 262
    1 more example

    But driving a car—particularly the supersize models—really should demand more concentration than, say, slouching slack-jawed in front of the wide screen in your den.

    2005 July 24, Michelle Cottle, “My Roving Barcalounger”, in Time, archived from the original on 28 Jul 2005

    Synonyms: dopey, stupid, stupefied

  3. datedOverly talkative; indiscreet.
    1 more example

    As a matter of fact, it was by trying to lean on it that Spencer Clay got hold of the facts of the case; and when young Clay got hold of anything, Marois Bay at large had it hot and fresh a few hours later; for Spencer was one of those slack-jawed youths who are constitutionally incapable of preserving a secret.

    1917, P. G. Wodehouse, “Wilton's Holiday”, in The Man with Two Left Feet and Other Stories

    Synonyms: big-mouthed

Synonyms & antonyms

adjectiveWith the mouth in an open position and the jaw hanging loosely, especially as indicating bewilderment or astonishment.

adjectiveUnsophisticated or unthinking; dimwitted in appearance.

adjectiveOverly talkative; indiscreet.

Translations

Russian полоро́тый
  • полоро́тый (polorótyj)having one's jaw hang loosely
Spanish boquiabierto
  • boquiabiertohaving one's jaw hang loosely
Cite this entry
APA

slack-jawed. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/slack-jawed

MLA

“slack-jawed.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/slack-jawed. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “slack-jawed,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/slack-jawed.

Source: slack-jawed on Wiktionary, CC BY-SA 4.0.