blab

1 ENTRIES FOUND:
blab /ˈblæb/ verb
blabs; blabbed; blabbing
blab
/ˈblæb/
verb
blabs; blabbed; blabbing
Britannica Dictionary definition of BLAB
informal
1 
: to say something that was supposed to be kept secret
[+ object]
[no object]
2 
[no object] : to talk too much