Harbored suspicion refers to the act of holding onto a feeling of skepticism or mistrust about something or someone. The antonyms for harbored suspicion would be words such as trust, faith, confidence, assurance, belief, and reliance. Instead of harboring suspicion, one could harbor trust and have faith in something. Instead of feeling unsure about someone or something, one could have confidence and assurance in their abilities or motives. Having belief in someone or something would replace the mistrust and skepticism that harbor suspicion brings. Reliance on trustworthy sources or individuals would also eliminate the need for harbored suspicion. In summary, harboring suspicion can be replaced with the opposite sentiments of trust, faith, confidence, assurance, belief, and reliance.