Quibble is most familiar as a verb, but it can also function as a noun meaning "an evasion of or shift from the point" and "a minor objection or criticism." Both forms of quibble settled into English in the mid-17th century, presumably (though not definitively) as a diminutive of a now-obsolete noun quib, meaning “quibble.” Quib in turn may have come from a form of Latin qui, meaning “who,” a distant relation also of our word who.