- Definitions|0
- Thesaurus|1.1k
- Abbreviations|0
| subdued(quiet, soft, low) | |
| tasteful(quiet, soft, low) | |
| thunderstruck(silent, dazed, dumb, astonished, flabbergasted) | |
| tongue-tied(silent, dazed, dumb, astonished, thunderstruck) | |
| unapproachable(quiet, gentle, aloof, reserved, reticent) | |
| uncompanionable(quiet, gentle, aloof, peaceful, reserved) | |
| under cover(expression, taciturn, uncommunicative) | |
| underground | |
| unflappable(astonished, thunderstruck, flabbergasted) | |
| unfriendly(aloof, reticent, standoffish) | |
| unmoving(adjective, tranquil, silent, motionless, immobile) | |
| unobtrusive(adjective, close, quiet, soft, low) | |
| unsociable(reserved, reticent, taciturn) | |
| unsociable constrained(expression, quiet, aloof, peaceful, reticent) | |
| unsocial | |
| uptight(quiet, restrained, discreet) | |
| voiceless(silent, dazed, dumb, astonished, thunderstruck) | |
| wordless(silent, dazed, dumb, astonished, thunderstruck) |
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| APA | Smart Define. (2015). close-mouthed thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/close-mouthed/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "close-mouthed thesaurus" https://smartdefine.org/close-mouthed/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, close-mouthed thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/close-mouthed/thesaurus/synonyms>. |
| MLA | Smart Define. "close-mouthed thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/close-mouthed/thesaurus/synonyms> |