- Definitions|0
- Thesaurus|186
- Abbreviations|0
39 entries under impromptu topic. ×
| unavoidable(adjective, simple, natural, casual, impulsive) | |
| unbidden(adjective, simple, natural, casual, impulsive) | |
| uncompelled(adjective, simple, natural, casual, impulsive) | |
| unconscious(adjective, simple, natural, casual, impulsive) | |
| unconstrained(adjective, simple, natural, casual, impulsive) | |
| uncontrived(adjective, simple, natural, casual, impulsive) | |
| uncontrolled(adjective, simple, natural, casual, impulsive) | |
| unintentional(adjective, simple, natural, casual, impulsive) | |
| unplanned(adjective, simple, natural, casual, impulsive) | |
| unpremediated(adjective, simple, natural, casual, impulsive) | |
| unprompted(adjective, simple, natural, casual, impulsive) | |
| voluntary(adjective, simple, natural, casual, impulsive) | |
| willing(adjective, simple, natural, casual, impulsive) | |
| extemporaneously(adverb, spontaneously, improv) | |
| improviso(adjective, informal, snap, unrehearsed) | |
| spontaneously(adverb, improv, extemporaneously) | |
| tossed off(expression, adjective, informal, snap) | |
| without preparation(expression, adjective, adverb, throwaway) | |
| without rehearsal(expression, adverb, spontaneously, improv) |
For more, visit
Off_top_of_head on
Power Thesaurus
| APA | Smart Define. (2011). off top of head thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/off_top_of_head/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "off top of head thesaurus" https://smartdefine.org/off_top_of_head/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2011, off top of head thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/off_top_of_head/thesaurus/synonyms>. |
| MLA | Smart Define. "off top of head thesaurus" 24 May 2011. Web. 24 September 2026. <https://smartdefine.org/off_top_of_head/thesaurus/synonyms> |