Definition of "devilish" in English

adjective

1. Resembling a devil.

2. Wicked, evil.

3. Roguish or mischievous.

   • a devilish grin

4. (informal) Extreme, excessive.

   • A devilish effort yielded a devilish success.
   • I had a devilish time moving the wardrobe downstairs.

adverb

1. (informal, dated) Devilishly; very; exceedingly.

   • It was devilish hot outside today.