| Words | Synonyms | Antonyms |
|---|---|---|
| Keen | sharp, poignant, eager, acute | vapid, insipid, blunt, undesiring |
| Kindred | relation, species, relative, affinity | unrelated, dissimilar, heterogeneous, disparate |
| Knave | dishonest, scoundrel, vagabond, rogue | paragon, innocent, benefactor, idealist |
| Knell | death knell, last blow, demolish, suppress | reconstruction, rediscovery, procreation, resurrection |
| Knotty | complicated, difficult, arduous, onerous | simple, manageable, tractable, flexible |