<p><strong>Adjective</strong></p><ul><li>of, like, or befitting a devil; diabolical; fiendish.</li><li>Synonyms: excessive, infernal, demoniac, satanic extreme; very great: a devilish mess.</li></ul><p><strong>Adverb</strong></p><ul><li>excessively; extremely: He's devilish proud.</li></ul><p><strong>End of Response</strong></p>