Dictionary / Vocabulary / 耳が早い
みみがはやい
being quick-eared; having sharp ears; being first to know about something
Also written 耳が速い、耳がはやい
武田夫人は近所の噂には耳が早い。
Mrs Takeda is quick to pick up on the local rumours.
彼は耳が早い。
He's in the know.