decuman
/ˈdɛkjʊmən/
adjective
- Very large or powerful, especially referring to a wave; huge, monstrous.
- A decuman swell rose suddenly, crashing against the cliffs with tremendous force.
- The sailors braced for a decuman wave that towered over the ship.
- Ancient stories often describe decuman storms that could swallow entire fleets.
Antonyms