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English definition of “slaphappy”

slaphappy

adjective     /ˌslæpˈhæp.i/ informal
happily careless and not thinking about the results of your actions: He's slaphappy in his approach to rules and regulations.Not paying attentionTreating as unimportantNeglecting and ignoring
(Definition of slaphappy adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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