witter

/ˈwɪtə(ɹ)/

Etymology

From Middle English Witere, Wytere, Whittere, Whytere (surname), from Middle English whitere (“a bleacher, caulker, whitewasher”), equivalent to white + -er.

name

A surname.

verb

To speak at length on a trivial subject.“She got home and started wittering about some religious cult she’d just heard about.”
to make sure, inform, or declare.

adj

knowing, certain, sure, wis.