Blabbered, past participle of blabber. Synonyms in the same form.
blabbed, prattled, blathered, chattered, twaddled, palavered, talked, gossiped, piffled, tittle-tattled, tattled, waffled, clacked, prated, carped, gibbered, gabbled, mandered, babbled, rambled, jabbered, driveled
All synonyms for blabber →