suspicion

Concise Oxford English Dictionary © 2008 Oxford University Press:
suspicion/səˈspɪʃn/

▶noun

• 1 a feeling that something is possible or likely.

  ■ a feeling or belief that someone is guilty of an illegal or dishonest action.

• 2 cautious distrust.

• 3 a very slight trace: a suspicion of a smile.

– phrases
above suspicion too good or honest to be thought capable of wrongdoing.
under suspicion suspected of wrongdoing.

– origin ME: from Anglo-Norman Fr. suspeciun, from med. L. suspectio(n-), from suspicere ‘mistrust’.