offhand

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Mr Novikov insists that the offhand service that often distresses visitors to Moscow is improving.
诺维科夫坚持说，那些困扰莫斯科游客的随随便便的服务正在改善。
V.S. RAMACHANDRAN: Offhand, I can’t tell you when they started using the term “anosognosia” for other types of denial.
拉玛钱德朗：我不能马上告诉你，他们何时开始将“病感失认症”这个术语用于其它的否认类型。
The best example I can think of offhand, I should let this wait, but Peter the Great, the czar of the Russians, who may or may not have beaten his son to death, at least he ordered him tortured.
我现在临时能想到的最好的例子,就是沙皇彼得大帝,本来要等会再说的,彼得大帝是否判处了自己儿子死刑还有争论,但至少他曾下令用酷刑折磨他的儿子

The best example I can think of offhand, I should let this wait, but Peter the Great, the czar of the Russians, who may or may not have beaten his son to death, at least he ordered him tortured.
我现在临时能想到的最好的例子,就是沙皇彼得大帝,本来要等会再说的,彼得大帝是否判处了自己儿子死刑还有争论,但至少他曾下令用酷刑折磨他的儿子
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The law does not prohibit light teasing, offhand comments or isolated and non-too-serious incidents.
FORBES: All Eyes On Ines Sainz Sexual Harassment Controversy
Members of Congress resent him for treating them in such an offhand manner.
ECONOMIST: Terror, torture and the political consequences
However, I have little reason to believe that such offhand remarks are true.
FORBES: Hedge Funds Migrate, Dominate South Florida Country Clubs

not friendly, and showing little interest in other people in a way that seems slightly rude
without looking for information and without thinking carefully; immediately

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.
If you say something offhand, you say it without checking the details or facts of it.