Answer: overheard

AnswerCrossword Clue
OVERHEARDEavesdropped
OVERHEARDPicked up surreptitiously
OVERHEARDGot an earful, in a way
OVERHEARDLearned of, in a way
OVERHEARDPicked up
overheardOVERHEAR, to hear by accident
overheardHear (someone or something) without meaning to or without the knowledge of the speaker