behindhand
/bɪˈhaɪndhænd; bɪ`haɪndˌhænd/ adj[pred 作表语]
~ (with/in sth) in arrears or late (esp in paying a debt) 拖欠; 晚交（尤指欠款）
be behindhand with the rent 欠租
get behindhand in one's work 拖延工作
He is never behindhand in offering advice, ie is always eager to advise. 他向别人提出劝告从来都很及时（一向热衷於劝人）. Cf 参看 beforehand.