Answer: harked

AnswerCrossword Clue
HARKEDListened carefully
HARKEDWas attentive
HARKEDPaid attention
HARKEDReferred (back).
HARKEDListened, poetically
HARKEDListened, old-style
HARKEDHeeded a herald, say
HARKEDListened closely
harkedHARK, to listen to
harkedto listen