adj.立即的，即席的

1.I can't say offhand how much money I earn.
[汉]我一下子说不上来我挣多少钱。
2.Offhand I can't quote you an exact price.
[汉]我无法立即给你报个准价。
3.He was rather offhand with me.
[汉]他对我未免太随便了。
4.I don't like his offhand manner.
[汉]我不喜欢他那粗鲁的态度。

【Adjective】

1. with little or no preparation or forethought;
"his ad-lib comments showed poor judgment"
"an extemporaneous piano recital"
"an extemporary lecture"
"an extempore skit"
"an impromptu speech"
"offhand excuses"
"trying to sound offhanded and reassuring"
"an off-the-cuff toast"
"a few unrehearsed comments"
2. casually thoughtless or inconsiderate;
"an offhand manner"
"she treated most men with offhand contempt"
【Adverb】

1. without previous thought or preparation;
"couldn't give the figures offhand"
"we decided offhand to go to Canada"
"she had made these remarks offhandedly"
2. in a casually inconsiderate manner;
"replied offhand, his mind a million miles away"
"she threw him over offhandedly without even a Dear-John letter"