| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | difficult, overwhelming |
| Synonyms: | all-powerful, arduous, awesome, ballbuster, challenging, colossal, dismaying, effortful, great, hard, impressive, indomitable, intimidating, labored, laborious, mammoth, mighty, murder*, onerous, overpowering, powerful, puissant, rough go, rough*, staggering, strenuous, tall order, toilsome, tough proposition, tough*, tremendous, uphill |
| Antonyms: | easy, not hard, pleasant, trivial |