nervous chatter

• babbleIncoherent speech
• ramblingLong-winded and unfocused
• jitteryAnxiously restless
• anxiousTroubled by uncertainty
• fidgetingRestless minor movements

prattle · stammering · small talk · awkward · twitchy · blathering · flustered · breathless · rapid · stumbling · uneasy · restless · gabbing · stuttering · word vomit · sweaty palms · giggly · scattered

• fast talkingmotormouthing, reeling off, firing off, patter
• involuntary speechblurting, exclamations, outbursts, Freudian slip, Freudian slips