| reject | rejects | rejecting | rejected | rejection |
| jealous | jealousy | jealously | jealousness | jealousies |
| gentle | gentler | gently | gentlemen | gentleman |
| bridge | bridges | bridging | bridged | drawbridge |
| hygiene | hygienic | hygienist | unhygienic | unhygienically |
| knowledge | knowledgeable | acknowledge | acknowledged | acknowledgement |
| ridge | ridges | ridged | ridging | ridgeway |
