Synonyms of informal
- 1 Syllable
- free, frank, cool
- 2 Syllables
- mellow, loose, motley, folksy, chatty, open, outdoor, outgoing, hilltop, sportiest, homey, breezy, mixed, sportier, common, sporty, plebian, improv, chattier, easy, yarder, offhand
- 3 Syllables
- spontaneous, straightforward, hang-loose, outgiving, easygoing, relaxed, natural, populist, familiar, nonformal, congenial, colloquial, unfussy, urbane, homelier, commonest, homely, throwaway, off-the-cuff
- 4 Syllables
- vernacular, unselfconscious, democratic, intimate, vernaculars, everyday, ordinary, unrepressed, unofficial, extempore, low-pressure, free-and-easy, inconspicuous, unrestrained, unconstrained, unself-conscious, unhampered
- 5 Syllables
- spur-of-the-moment, extemporaneous, conversational, uninhibited, unceremonious, unconventional, nature-loving, extemporary
- 6 Syllables
- confabulatory, improvisatory