blab 
/ˈblæb/ verb
blabs; blabbed; blab·bing /ˈblæb/ verb informal 1 : to say something that was supposed to be kept secret [+ obj] ▪ Don't tell Mary. She'll blab it all over town. [no obj] ▪ “How did she find out about the surprise party?” “Tom blabbed.” 2 [no obj] : to talk too much
▪ He kept blabbing on and on about politics.
▪ He kept blabbing on and on about politics.
