<p><strong>Adjective</strong></p><ul><li>not easily or readily done; requiring much labor, skill, or planning to be performed successfully; hard; a difficult job.</li><li>hard to understand or solve; a difficult problem.</li><li>hard to deal with or get on with; a difficult pupil.</li><li>hard to please or satisfy; a difficult employer.</li><li>hard to persuade or induce; stubborn; a difficult old man.</li><li>disadvantageous; trying; hampering; the operation was performed under the most difficult conditions.</li><li>fraught with hardship, especially financial hardship; we saw some difficult times during the depression years.</li></ul><p><strong>Synonyms</strong></p><ul><li>arduous</li><li>knotty</li><li>involved</li><li>intricate</li><li>fussy</li><li>finical</li><li>particular</li><li>uncompromising</li><li>obdurate</li></ul><p><strong>Antonyms</strong></p><ul><li>easy</li><li>simple</li><li>well-known</li></ul>