also happy go lucky, 1670s, "haphazard, in any way one pleases; every man for himself." Earlier as happy-be-lucky (1630s). The adjective, of persons, recorded from 1835, "careless," hence "carefree."
happify
happily
happiness
-happy
happy
happy-go-lucky
Hapsburg
haptic
haptics
hara-kiri
haram
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