Prefix
| Root Word | Prefix | Opposite Word |
|---|---|---|
| regular | ir | irregular |
| relevant | ir | irrelevant |
| resistible | ir | irresistable |
| responsible | ir | irresponsible |
| Root Word | Prefix | Opposite Word |
ADS
| Root Word | Prefix | Opposite Word |
|---|---|---|
| regular | ir | irregular |
| relevant | ir | irrelevant |
| resistible | ir | irresistable |
| responsible | ir | irresponsible |
| Root Word | Prefix | Opposite Word |