10 prefixes

1. Dis- not, opposite of Example: disloyal, disagree

2. mid- middle Example: midlife, midterm

3. Out- better, faster, longer, beyond Example: outreach, outcome

4. Over- too much Example: overreact, overrated

5. Post- after Example: post-election, post-graduation

6. Self- self Example: self-sufficient

7. Step- family relation by remarriage Example: stepbrother

8. Un- not, opposite of Example: unnecessary, unequal

9. Under- below, beneath, lower in grade/dignity, lesser, insufficient Example: underachieve, underground, underpass

10. Inter- between, among Example: interstate, interact