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English definition of “thoughtless”

thoughtless

adjective     /ˈθɔːt.ləs/ US  /ˈθɑːt-/
C2 not considering how your actions or words may upset someone: It was thoughtless not to phone and say you'd be late. She's not intentionally unkind - she's just a little thoughtless sometimes.InconsiderateSelfishnessNot showing careful thought thoughtlessly     /ˈθɔːt.ləs.li/ US  /ˈθɑːt-/ adverb thoughtlessness     /ˈθɔːt.ləs.nəs/ US  /ˈθɑːt-/ noun [U] InconsiderateSelfishness
(Definition of thoughtless adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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