Prefix
| Root Word | Prefix | Opposite Word |
|---|---|---|
| necessary | un | unnecessary |
| popular | un | unpopular |
| questionable | un | unquestionable |
| safe | un | unsafe |
| social | un | unsocial |
| pleasant | un | unpleasant |
| legal | il | illegal |
| legible | il | illegible |
| logical | il | illogical |
| literate | il | illiterate |
| Root Word | Prefix | Opposite Word |