Exhibiting no courtesy; rude.

不礼貌的，失礼的；粗鲁的。

youdao

It's both smart and polite to offer something at no charge as a gesture of courtesy or appreciation to existing customers, from free parking to an occasional thank-you gift.

这两种都是对现有客户的一种恩惠之举或者感激，是聪明和礼貌的，从免费停车到偶尔的一次答谢礼物。

youdao

We shall have no compunction in throwing overboard our ancient manners, nor any in emulating their lack of courtesy.

抛弃我们古代的礼仪我们将不会产生内疚之情，效仿他们缺乏殷勤好客的态度我们也不会心生不安之意。

youdao

From 106-0, when an injudicious reverse sweep cost Strauss his wicket, England slumped to 141-5 and although they reached their target with 10 overs to spare, it was somehow fitting that they should finally stumble over the line courtesy of a no-ball.

BBC: England escape one-day whitewash

To the contrary, if the rental activity does not rise to the level of a trade or business, the fact that it is no longer treated as passive courtesy of the real estate professional rules will not change the fact that the rental income is considered net investment income.

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Swarthmore says it does waitlist some students as a courtesy, but rarely anyone with no chance of getting in.

WSJ: College Waitlists Offer Little Hope