| profound | |
| quiet | |
| hesitant | |
| mum | |
| abrade | |
| dissuasive | |
| speechless | |
| uncommunicative | |
| airless | |
| awkward | |
| implausible | |
| inarticulate | |
| stuttering(adjective, quiet, vocative) | |
| ashamed | |
| bashful | |
| buckle | |
| callused | |
| careful | |
| cautious | |
| ceremonious |
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| APA | Smart Define. (2015). glib thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/glib/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "glib thesaurus" https://smartdefine.org/glib/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, glib thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/glib/thesaurus/antonyms>. |
| MLA | Smart Define. "glib thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/glib/thesaurus/antonyms> |