Synonyms|54Antonyms|2|Broader|0Narrower|0Related|30
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embryonic
0
extemporaneous
0
extemporarily
0
extemporary(impromptu, throwaway, extemporaneous)
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extempore(impromptu, extemporaneous, ad-lib)
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green
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hewn
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immature
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improv(adverb, offhand, impromptu, spontaneously, extemporaneously)
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incomplete
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informal(impromptu, extemporaneous)
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makeshift(adverb, offhand, impromptu)
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off the top of head(expression, idiom, impromptu, extemporaneous, spontaneously)
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off top of head(expression, idiom, impromptu, throwaway, spontaneously)
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preparation
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raw
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rudimental
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spontaneous(impromptu, extemporaneous)
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spontaneously(impromptu, improv, extemporaneously)
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spur-of-the-moment(impromptu, extemporaneous)
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APASmart Define. (2013). without preparation thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/without_preparation/thesaurus/synonyms
ChicagoSmart Define. 2013. "without preparation thesaurus" https://smartdefine.org/without_preparation/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2013, without preparation thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/without_preparation/thesaurus/synonyms>.
MLASmart Define. "without preparation thesaurus" 19 May 2013. Web. 22 September 2026. <https://smartdefine.org/without_preparation/thesaurus/synonyms>