quibble

Concise Oxford English Dictionary © 2008 Oxford University Press:
quibble/ˈkwɪbl/

▶noun

• 1 a slight objection or criticism.

• 2 archaic a pun.

▶verb argue about a trivial matter.

– derivatives
quibbler noun,
quibbling adjective,
quibblingly adverb.

– origin C17: dimin. of obs. quib ‘a petty objection’, prob. from L. quibus, dative and ablative pl. of qui, quae, quod ‘who, what, which’, freq. used in legal documents.