Longman Dictionary of Contemporary English homepage

Date: 1200-1300
Language: Latin
Origin: suspicio, from suspicere; SUSPECT1

suspicion

 noun
     
sus‧pi‧cion
1 [uncountable and countable] a feeling you have that someone is probably guilty of doing something wrong or dishonest:
I can't say for definite who did it, but I certainly have my suspicions.
Police suspicions were confirmed when the stolen property was found in his flat.
I wondered how I could leave early without arousing anyone's suspicions.
on suspicion of (doing) something
She was arrested on suspicion of murder.
under suspicion
He felt he was still under suspicion.
Mitchell later came under suspicion of assaulting two young girls.
above/beyond suspicion
She felt that she ought to be above suspicion (=so honest that no one could think that she had done anything wrong).
2 [uncountable and countable] a feeling that you do not trust someone:
She always treated us with suspicion.
People moving into the area are often regarded with suspicion.
3 [countable] a feeling you have that something is true, especially something bad
suspicion (that)
I have a suspicion that the local authority may be planning to close the school.
She was left with a sneaking suspicion (=a small suspicion) that Steven was not telling the truth.
4

a suspicion of something

formal a very small amount of something that you can only just see, hear, or taste:
I could see the faintest suspicion of a tear in her eyes.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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