| Word | Definitions | Synonyms |
|---|---|---|
| nifedipine | (noun) calcium blocker (trade name Procardia); appears to increase the risk of recurrent heart attacks | Synonyms: Procardia |
| niff | (noun) an unpleasant smell | Synonyms: pong |
| niffy | (adjective) (British informal) malodorous | - |
| nifty | (adjective) excellent | Synonyms: bang-up, bully, corking, cracking, dandy, great, groovy, keen, neat, not bad, old, peachy, slap-up, smashing, swell |