Leviathan(adjective)
Very large or powerful/ something large or formidable.
Synonyms: Giant, Mammoth, Behemoth, Colossus
Antonyms: Diminutive, Dwarf
Example: In the ocean, the whale is considered a leviathan because of its tremendous size.
Trick to remember: Rajasthan ke Ranthambore National Park me Leviathan animal dekha 
