- change one's mind; "He rethought his decision to take a vacation"
- reconsideration: thinking again about a choice previously made; "he had second thoughts about his purchase"
- Rethink is a mental illness charity in England. Its mission statement is "Working together to help everyone affected by severe mental illness recover a better quality of life. ...
- Re:think is an imprint label of under EMI. It has signed several acts, including This World Fair, The Colour , Sarah Masen and Switchfoot . Rethink is well-known for supporting the ONE Campaign as well as the lowercase people Justice Fund.
- To think again about a problem