| impending(adjective, near) | |
| imperceptible(adjective, hard, faint) | |
| insubstantial | |
| minute(adjective, slight, small, unimportant, subtle) | |
| overnight | |
| precipitous(adjective, sudden, instantaneity) | |
| quick as lightning(expression, idiom, instantaneity) | |
| quick as thought(expression, idiom, instantaneity) | |
| slapdash | |
| speedy | |
| stopgap | |
| superficial(slight, small, unimportant, transient, transitory) | |
| swift | |
| transitional | |
| unenduring(transient, short-lived) | |
| vanishing(adjective, slight, small, unimportant, commonplace) | |
| Band-Aid | |
| acting | |
| ad hoc | |
| ad interim |
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| APA | Smart Define. (2016). momentary thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/momentary/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "momentary thesaurus" https://smartdefine.org/momentary/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, momentary thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/momentary/thesaurus/synonyms>. |
| MLA | Smart Define. "momentary thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/momentary/thesaurus/synonyms> |