60 entries under thoughtless topic. ×

2
oblivious(careless, ignorant, unaware, inconsiderate)
2
reckless(noun, adjective, careless, casual)
2
unheeding(adjective, careless, unwise, ignorant)
2
unmindful(careless, ignorant, hidden, unconscious)
1
blunt(adjective, careless, inconsiderate)
1
devil-may-care(noun, passionate, violent, careless, casual)
1
emotional(noun, passionate, violent, abrupt)
1
feckless(adjective, rude, careless, unwise)
1
flaky(passionate, violent, abrupt, impetuous)
1
gone off deep end(expression, idiom, passionate, violent)
1
hot-and-cold(passionate, violent, abrupt, impetuous)
1
insensitive(careless, inconsiderate)
1
jumping the gun(expression, idiom, passionate, violent)
1
mad(passionate, violent, abrupt, impetuous)
1
madcap(noun, impetuous, unwary)
1
passionate(violent, impulsive, rash, unthinking)
1
swift(passionate, violent, rash, unthinking)
1
undiplomatic(adjective, weak, rude, careless)
1
unwise(adjective, weak, careless, unconscious)
1
up-and-down(passionate, violent, abrupt, impetuous)
11 years ago|6.1k views|share |citing 
APASmart Define. (2015). unpremeditated thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unpremeditated/thesaurus/synonyms
ChicagoSmart Define. 2015. "unpremeditated thesaurus" https://smartdefine.org/unpremeditated/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unpremeditated thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unpremeditated/thesaurus/synonyms>.
MLASmart Define. "unpremeditated thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/unpremeditated/thesaurus/synonyms>