adjective
- superlative form of niffy; having the strongest or most unpleasant smell; smelliest
Usage: informal; chiefly British
Examples
- The niffiest part of the gym is always the locker room after practice.
- That's the niffiest cheese I've ever encountered.
- The niffiest socks were hiding under his bed for weeks.
- After the long hike, his boots were the niffiest things in the house.