offhand

1. ADJ If you say that someone is being offhand, you are critical of them for being unfriendly or impolite, and not showing any interest in what other people are doing or saying. 不友好的; 不禮貌的; 漫不經心的[usu v-link ADJ] [表不滿]

Consumers found the attitude of its staff offhand and generally offensive to the paying customer. 消費者認爲職員態度漫不經心，通常冒犯來這些花了錢的顧客。

2. ADV If you say something offhand, you say it without checking the details or facts of it. 未經核實地[ADV after v]

"Have they done the repairs?"—"Can't say off-hand, but I doubt it."

“他們脩過了嗎？”——“我一時說不清，但我想還沒有”。