carping
definition
persistent petty criticism or faultfinding
example
Despite the project's overall success, there was still some carping from the critics about minor details.
synonyms
naggingcriticizingnitpicking
word origin — The term 'carping' comes from the Middle English word 'carpinge', which means to complain or murmur, derived from the Old French 'carper', meaning to find fault.