Synonyms|87Antonyms|3|Broader|0Narrower|0Related|5

27 entries under informal topic. ×

2
ad lib(expression, adjective, free, casual)
2
by ear(expression, adjective, free, casual)
2
improv(adjective, adverb, free, casual)
1
ad hoc(adjective, free, casual, snap)
1
at first glance(expression, idiom, free, casual)
1
expedient(adjective, free, casual, snap)
1
immediate(adjective, free, casual, snap)
1
improvisatory(adjective, free, casual, snap)
1
improviso(adjective, free, casual, snap)
1
jamming(adjective, free, casual, snap)
1
made-up(adjective, free, snap, unrehearsed)
1
makeshift(adjective, adverb, free, casual)
1
off top of head(expression, adjective, idiom, adverb)
1
on-the-spot(adjective, free, casual, snap)
1
on impulse(expression, adjective, free, casual)
1
snap(adjective, free, casual, unrehearsed)
1
spontaneous(adjective, free, snap, impromptu)
1
spur-of-the-moment(adjective, free, casual, impromptu)
1
taking for ride(expression, idiom, free, casual)
1
thought out loud(expression, idiom, free, casual)
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APASmart Define. (2011). off the top of head thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/off_the_top_of_head/thesaurus/synonyms
ChicagoSmart Define. 2011. "off the top of head thesaurus" https://smartdefine.org/off_the_top_of_head/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2011, off the top of head thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/off_the_top_of_head/thesaurus/synonyms>.
MLASmart Define. "off the top of head thesaurus" 23 May 2011. Web. 29 September 2026. <https://smartdefine.org/off_the_top_of_head/thesaurus/synonyms>