cavil
Concise Oxford English Dictionary © 2008 Oxford University Press:
cavil /ˈkav(ə)l/
▶verb (cavils, cavilling, cavilled; US cavils, caviling, caviled) make petty or unnecessary objections. ▶noun a petty or unnecessary objection.
– derivatives
caviller noun.
caviller noun.
– origin C16: from Fr. caviller, from L. cavillari, from cavilla ‘mockery’.
'cavil' also found in these Oxford entries:

