Have an opinion is a phrase that is used to describe when someone has a strong opinion about something. The crossword solutions for this phrase are DEEM, BELIEVE, and FEEL. DEEM is a verb meaning to judge or consider something to be true or important. BELIEVE is a verb meaning to accept something as true, especially without proof. FEEL is a verb meaning to have an emotion or sensation. Therefore, the crossword solutions for the phrase 'have an opinion' can be summarized as judging, accepting, and having an emotion or sensation about something.