adj.不友好的,不礼貌的,简慢的;
adv.即席地,未经核实地;
例句:
It is too great a thing for me to decide offhand.
这件事太重大了,不是仓猝之间就能决定的.
He was rather offhand with me.
他对我未免太随便了.
I wouldn't want to say what I thought about it offhand.
我不愿意随便说我关于这事的想法.