a belief or idea that something may be true

[ + that ] I have a suspicion that he only asked me out because my brother persuaded him to. 我怀疑是我哥哥说服他约我出去的。

She had a nagging/sneaking suspicion that she might have sent the letter to the wrong address. 她心烦意乱地猜想／心里暗想自己可能把信寄错了地址。

a feeling or belief that someone has committed a crime or done something wrong

"I'm arresting you on suspicion of illegally possessing drugs," said the police officer. 警官说：“你涉嫌非法持有毒品，我将拘捕你。”

In these cases, the parents usually come under suspicion. 在这些案例中，孩子父母通常受到怀疑。

usually UK She is under suspicion of murder. 她涉嫌谋杀。

In this particular case, they are above/beyond suspicion (= cannot be thought to be guilty). 在这起案件中，他们没有嫌疑。

His strange behaviour aroused/raised his neighbours' suspicions. 他奇怪的举动引起了邻居们的怀疑。

doubt or lack of trust

Since they discovered the truth about his background, his colleagues have regarded him with suspicion. 自从他的同事知道了他的真实背景，就不再信任他了。

They feel that she harbours (= has) suspicions of their politics. 他们觉得她对他们的政见心存怀疑。

a small amount

He gave just a suspicion of a smile. 他只是微微一笑。

I have a suspicion of doubt about whether I should accept his invitation or not. 我有点儿疑虑，不知该不该接受他的邀请。