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

Venus' win was a cocktail of solid hold-serve tennis, dangerous shot-making (courtesy of her range and mobility) and the quick rewards of no-ad scoring.

威廉姆斯的取胜与她坚实的发球技术，危险的战法（大范围机动灵活作战）以及快速的no-ad scoring回球分不开。

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.

FORBES: Ten Things We Learned From The New Obamacare Investment Tax Regulations

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