behemoth behemoth /ˈbiːhəməθ/

noun

1. A person of exceptional importance and reputation  ( behemoth , colossus , heavyweight , giant , titan )
   a person of exceptional importance and reputation
   
2. Someone or something that is abnormally large and powerful  ( behemoth , colossus , giant , goliath , monster )
   someone or something that is abnormally large and powerful