rare. [A late word, perhaps arising out of BLEAT (sense 2 b), influenced by BLATANT. Bleat was formerly pronounced (blēt), as in great.]
trans. and intr. To babble, prate, give mouth (about), talk blatantly.
1666. Pepys, Diary (1879), IV. 46. He blates to me what has passed between other people and him.
1878. Gilder, Poet & Master, 38. They peddle their petty schemes, and blate and babble and groan.
