Concerned

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late Middle English: from French concerner or late Latin concernere (in medieval Latin ‘be relevant to’), from con- (expressing intensive force) + cernere ‘sift, discern’.

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concerned (adj.)

1650s, "uneasy, troubled, anxious," past-participle adjective from concern (v.). As an American English euphemism for "damned," 1834 (consarnt), also consarned. Related: Concernedly.