- Definitions|1
- Thesaurus|729
- Abbreviations|0
| ill-looking(adjective, ugly) | |
| ill-suited | |
| ill-timed | |
| impracticable | |
| inapplicable | |
| incommodious(adjective, offensive, unacceptable, inexpedience) | |
| incompatible | |
| inconsonant | |
| indefensible | |
| inefficient(adjective, inexpedient) | |
| inelegant(adjective, ugly) | |
| inhospitality(noun, disagreeable, lousy, unwelcome, repellent) | |
| insipid(offensive, unpleasant, disgusting, painful, tasteless) | |
| insufferable(adjective, offensive, rude, terrible, vile) | |
| invidious(adjective, nasty, offensive, unpleasant, terrible) | |
| lamentable | |
| left out in cold(noun, expression, idiom, disagreeable, lousy) | |
| loathed(adjective, offensive, disagreeable, out, gross) | |
| loser(adjective, out, gross, lousy, weird) | |
| mal a propos(expression, idiom) |
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| APA | Smart Define. (2015). undesirable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undesirable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undesirable thesaurus" https://smartdefine.org/undesirable/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, undesirable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undesirable/thesaurus/synonyms>. |
| MLA | Smart Define. "undesirable thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/undesirable/thesaurus/synonyms> |