Approve
Definition 1 of 3
Pro Tip 1/2
Personal Opinion
Use 'approve of' to express personal support or satisfaction about someone or something. Although unlikely, your parents might approve of your decision to take a gap year.
Pro Tip 2/2
Disapproval
'Not approve of' strongly expresses personal disagreement or disapproval, often used politely. My grandparents do not approve of my playing video games late at night.