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English definition of “gibber”

gibber

verb [I] uk   /ˈdʒɪb.ər/ us    // mainly disapproving
to speak quickly in a way that cannot be understood, usually when you are very frightened or confused: Stop gibbering, man, and tell us what you saw.Ways of talking
gibbering
adjective uk   /-ɪŋ/ us  
I stood there like a gibbering idiot.Stupid and sillyOf unsound mind
(Definition of gibber from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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