| Word | Definitions | Synonyms |
|---|---|---|
| antiknock | (adjective) suppressing or eliminating engine knock in combustion engines | Synonyms: antiknocking |
| antiknocking | (adjective) suppressing or eliminating engine knock in combustion engines | Synonyms: antiknock |
| knockabout | (adjective) suitable for rough use | - |
| (adjective) full of rough and exuberant animal spirits | Synonyms: boisterous | |
| knockdown | (adjective) (furniture) easily assembled and dismantled | - |
| knockout | (adjective) very strong or vigorous | Synonyms: hard, severe |