suspicion

/səˈspɪʃən/
noun
  1. A feeling or belief that something is wrong, illegal, or dishonest without certain proof.
    • The police acted on a suspicion and searched the house.
    • His strange behavior raised my suspicion.
    • She had a suspicion that someone was following her.
  2. A small amount or trace of something.
    • There was a suspicion of garlic in the sauce.
    • The sky had a suspicion of pink at dawn.
    • I detected a suspicion of sadness in her voice.