swear off (verb)

1. After a series of bad breakups, she decided to swear off love and focus on herself for a while.

2. The superhero swore off using his powers after realizing the harm they caused.

3. The artist decided to swear off traditional painting techniques and explore more experimental mediums.

4. In his stand-up routine, the comedian swore off telling knock-knock jokes because he found them childish.