11
spoken(verb, adjective)
8
unwritten(adjective, understood)
8
oral(adjective, spoken)
7
verbal
5
ad-lib(adjective, adverb, manner, rehearsed)
5
unscripted
3
common-law
2
expressed
2
extemporaneous
2
extemporary
2
extempore
2
graphic
2
impromptu
2
improvised
2
offhand
2
phonic
2
spontaneous
2
understood(adjective, explicit, assumed, implicit)
2
unpremeditated
2
uttered
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APASmart Define. (2015). written thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/written/thesaurus/antonyms
ChicagoSmart Define. 2015. "written thesaurus" https://smartdefine.org/written/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, written thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/written/thesaurus/antonyms>.
MLASmart Define. "written thesaurus" 24 September 2015. Web. 23 September 2026. <https://smartdefine.org/written/thesaurus/antonyms>