1
accidentally(adverb, short, sudden, suddenly, unexpectedly)
1
any old way(expression, idiom, careless, bold, thoughtless)
1
asleep
1
bold(adjective, careless, thoughtless, wary, heedless)
1
brash(adjective, careless, bold, thoughtless, impulsive)
1
by accident(expression, adverb, short, sudden, suddenly)
1
by mistake(expression, adverb, short, sudden, suddenly)
1
by surprise(expression, adverb, short, sudden, suddenly)
1
careless(adjective, bold, thoughtless, impulsive, inappropriate)
1
carelessly(adverb, short, sudden, suddenly, unexpectedly)
1
caught napping(expression, adjective, careless, bold, thoughtless)
1
culpably negligent
1
derelict
1
devil-may-care(adjective, careless, bold, thoughtless, wary)
1
fast-and-loose(adjective, careless, bold, thoughtless, impulsive)
1
flat-footed(adjective, adverb, inattentive, negligent, unprepared)
1
foot-in-mouth(adjective, careless, bold, thoughtless, impulsive)
1
goofing off
1
hasty(adjective, careless, bold, thoughtless, impulsive)
1
heedless(adjective, careless, bold, thoughtless, impulsive)
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APASmart Define. (2015). off guard thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/off_guard/thesaurus/synonyms
ChicagoSmart Define. 2015. "off guard thesaurus" https://smartdefine.org/off_guard/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, off guard thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/off_guard/thesaurus/synonyms>.
MLASmart Define. "off guard thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/off_guard/thesaurus/synonyms>