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inobservant (adj.)
[inobservant 词源字典]
1660s, from Latin
inobservantem
(nominative
inobservans
) "inattentive, negligent," from
in-
"not" (see
in-
(1)) +
observans
(see
observance
).
[inobservant etymology, inobservant origin, 英语词源]
[inobservant 词源字典]