| a. | 1. | Resembling, characteristic of, or pertaining to, the devil; diabolical; wicked in the extreme. |
| 2. | Extreme; excessive. |
| Adj. | 1. | devilish - showing the cunning or ingenuity or wickedness typical of a devil; "devilish schemes"; "the cold calculation and diabolic art of some statesmen"; "the diabolical expression on his face"; "a mephistophelian glint in his eye" |
| 2. | devilish - playful in an appealingly bold way; "a roguish grin" | |
| Adv. | 1. | devilish - in a playfully devilish manner; "the socialists are further handicapped if they believe that capitalists are not only wicked but also devilishly clever" Synonyms: devilishly |