off-handadj.
'ɔ:f'hænd
中文adj. 不拘礼节的；临时的，未经准备的\nadv. 当即，立即
不拘礼节的；临时的，未经准备的
adv. 当即，立即
词根词源
off-hand (adv.)also offhand, 1690s, "at once, straightway," from off (adv.) + hand (n.). Probably originally in reference to shooting without a rest or support. Hence, of speech or action, "unpremeditated" (1719). Related: Off-handed; off-handedly.
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