Being nitpicky is a behavior characterized by excessive attention to detail and an overly critical attitude. This behavior can be expressed through the use of words such as 'CARP, ' which means to find fault or complain querulously, 'CAVIL, ' which means to raise trivial and frivolous objections, 'caviler, ' which means one who cavils, 'NIGGLE, ' which means to make petty criticisms, and 'splithairs, ' which means to make a distinction on insignificant grounds.