153 entries under adjective topic. ×

20
quick(prompt, fast, summary, speedy)
18
immediate(time, direct, fast, precise)
18
instant(time, direct, prompt, precise)
13
hasty(fast, impulsive, summary, swift)
12
prompt(direct, fast, quick, responsive)
12
fast(direct, prompt, quick, immediate)
12
rapid(fast, precise, responsive, early)
12
swift(fast, precise, responsive, summary)
10
abrupt(direct, fast, impulsive, summary)
10
momentary(brief, immediate, transient, instantaneity)
10
sudden(fast, summary, swift, immediate)
9
brisk(fast, precise, responsive, early)
9
speedy(direct, fast, precise, responsive)
8
brief(fast, short, swift, immediate)
8
spontaneous(impulsive, immediate, sudden)
7
transitory(immediate, transient, transientness)
6
cursory(fast, rapid, swift, instant)
6
fleeting(sudden, transient, transientness)
6
hurried(fast, summary, rapid, swift)
6
transient(transient, transientness)
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APASmart Define. (2016). instantaneous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/instantaneous/thesaurus/synonyms
ChicagoSmart Define. 2016. "instantaneous thesaurus" https://smartdefine.org/instantaneous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, instantaneous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/instantaneous/thesaurus/synonyms>.
MLASmart Define. "instantaneous thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/instantaneous/thesaurus/synonyms>