inconsiderately+glib
1flippant — a. 1. Voluble, fluent, glib, talkative, nimble of speech, of ready utterance. 2. Pert, impertinent, malapert, forward, bold, inconsiderately glib, unscrupulously pert …
2offhand — Synonyms and related words: Bohemian, abrupt, ad lib, ad libitum, ad lib, affable, airily, airy, aloof, any old way, any which way, anyhow, at short notice, at sight, blase, brusque, bunglingly, by ear, by the by, by the way, careless, carelessly …
