adjective
or drivelling
Etymology: Middle English drivelinge talking stupidly, from drivelen to let saliva drip from the mouth, talk stupidly + -inge, -ing -ing
1. : feeble like an infant in thought or action
reduced to a driveling idiot
2. : inane in an infantile or feebleminded way
a driveling and idiotic and superficial travesty of the Italian culture — Ezra Pound
• driv·el·ing·ly or driv·el·ling·ly adverb