offhand
adjective uk/ˌɒfˈhænd/ us/ˌɑːfˈhænd/ (UK informal also offish)
不友好的;漫不经心的;怠慢的
not friendly, and showing little interest in other people in a way that seems slightly rude
I didn't mean to be offhand with her - it's just that I was in such a hurry. 我希望我没有表现出怠慢了她——我不过是太匆忙了。
offhand
adverb uk/ˌɒfˈhænd/ us/ˌɑːfˈhænd/
未经核实地;不假思索地;立刻
without looking for information and without thinking carefully; immediately
I can't quote the exact statistics for you offhand, but they're there for you to see in the report. 我不能马上就给你举出确切的数据，不过这些数据可以在报告中查到。