American English

Definition of gibber verb from the Oxford Advanced American Dictionary

 

gibber

 verb
verb
NAmE//ˈdʒɪbər//
 
[intransitive, transitive] (+ speech)Verb Forms present simple I / you / we / they gibber
 
he / she / it gibbers
 
past simple gibbered
 
-ing form gibbering
 
 
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to speak quickly in a way that is difficult to understand, often because of fear He cowered in the corner, gibbering with terror. By this time I was a gibbering wreck.
See the Oxford Advanced Learner's Dictionary entry: gibber