When we have mixed feelings about something, it means that we have both positive and negative emotions towards it. Here are some synonyms that can be used instead of "have mixed feelings":
1. Ambivalent - feeling both positive and negative towards something at the same time
2. Conflicted - feeling torn between two opposing emotions or opinions
3. Contradictory - having conflicting feelings or thoughts about something
4. Uncertain - feeling unsure or hesitant about something
5. Dissonant - having conflicting or incompatible emotions or thoughts
6. Complex - having intricate and multifaceted feelings about something
7. Bittersweet - having both positive and negative emotions simultaneously
8. Torn - feeling divided or conflicted about something
9. Dichotomous - having two opposing emotions or thoughts
10. Mixed emotions - feeling a combination of positive and negative emotions.