Have a hunch about is a phrase that suggests having an intuition or feeling about something without having any concrete evidence. The two crossword solutions for this phrase are INTUIT (6 letters) and SENSE (5 letters). INTUIT means to have a strong feeling or understanding of something without any logical reasoning or proof, while SENSE means to have a feeling or understanding of something through the use of one's senses. Both words can be used to describe the phrase 'have a hunch about' as they both suggest having a feeling or understanding of something without any concrete evidence.