complacency
(also complacence)
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noun
a feeling of smug or uncritical satisfaction with oneself or one's achievements:
｟通例けなして｠ 満足, 満悦; 自己満足, 独り善がり.
e.g. the figures are better, but there are no grounds for complacency.
ORIGIN
mid 17th century: from medieval Latin complacentia, from Latin complacere ‘to please’.