Tending to find fault or make petty criticisms; overly critical in a way that seems unfair or looking for small mistakes to complain about.
From Latin captiosus, derived from captio (a taking or seizure, later metaphorically 'a snare' or 'a trick'). The word evolved to mean 'tricky' or 'deceptive,' then shifted to describe someone who 'catches' people in errors or fault-finding.
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