"speak rapidly and inarticulately," c. 1600, probably a back-formation from gibberish. Related: Gibbered; gibbering.
giant
giantess
giaour
Gib
gib
gibber
gibberish
gibbet
gibbon
gibbous
gibe
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}