verb · to provide a verbal or written reply to a question, comment, or message

老师问他话，他却只是低头不答。

verb · bound form having the same meaning as the free word 答 (da2), used in compounds like 答应 dā​ying or 答理 dā​li

他还在生气，根本不答理我。

verb · to return a favor, gift, or greeting with a reciprocal action

既然受了人家的恩惠，我也该答一份礼。