Definition of blab verb from the Oxford Advanced Learner's Dictionary

 

blab

 verb
verb
BrE BrE//blæb//
 
; NAmE NAmE//blæb//
 
Verb Forms present simple I / you / we / they blab
BrE BrE//blæb//
 
; NAmE NAmE//blæb//
 
he / she / it blabs
BrE BrE//blæbz//
 
; NAmE NAmE//blæbz//
 
past simple blabbed
BrE BrE//blæbd//
 
; NAmE NAmE//blæbd//
 
past participle blabbed
BrE BrE//blæbd//
 
; NAmE NAmE//blæbd//
 
-ing form blabbing
BrE BrE//ˈblæbɪŋ//
 
; NAmE NAmE//ˈblæbɪŋ//
 
 
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[intransitive, transitive] blab (to somebody) (about something) | blab (something) (to somebody) (informal) to tell somebody information that should be kept secret Someone must have blabbed to the police. Try not to blab the whole story. Word Origin Middle English (as a noun): probably of Germanic origin; ultimately imitative.
See the Oxford Advanced American Dictionary entry: blab