140 entries under adverb topic. ×

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in a beeline
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on a dime(expression, idiom, right)
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precipitately
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prompt(adjective, promptly, punctually)
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punctual(prompt, early, proximately, promptly)
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reliable(prompt, promptly, punctually)
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right off the bat(expression, idiom)
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spontaneously
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straightaway away
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sudden(suddenly, unexpectedly, unawares, abruptly)
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there and then(expression, right, directly, immediately)
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this second
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unanticipatedly(suddenly, unexpectedly, unawares, abruptly)
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unaware(suddenly, unexpectedly, unawares, abruptly)
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unawares(suddenly, unexpectedly, abruptly, ignorantly)
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unexpectedly(suddenly, unawares, abruptly)
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with alacrity
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with celerity
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without hesitating
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without warning(expression, suddenly, unexpectedly, unawares)
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APASmart Define. (2015). without delay thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/without_delay/thesaurus/synonyms
ChicagoSmart Define. 2015. "without delay thesaurus" https://smartdefine.org/without_delay/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, without delay thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/without_delay/thesaurus/synonyms>.
MLASmart Define. "without delay thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/without_delay/thesaurus/synonyms>