Here's a list of informal to formal vocabulary verbs presented in pairs or groups, highlighting their more casual and more sophisticated alternatives.
1. Ask - Inquire
2. Get - Obtain
3. Help - Assist
4. Look for - Seek
5. Show - Demonstrate
6. Want - Desire
7. Keep - Maintain
8. Use - Utilize
9. Find - Discover
10. Talk about - Discuss
11. Call - Contact
12. Try - Endeavor
13. Deal with - Address
14. Check - Verify
15. Think - Consider
16.