BLABBING
Scrabble letter values: B3L1A1B3B3I1N1G2 = 15
Definition
BLABBING is the present participle of BLAB.
verb BLAB: divulge confidential information or secrets.
Synonyms of BLAB: spill_the_beans, let_the_cat_out_of_the_bag, talk, tattle, peach, babble, sing, babble_out