Synonyms, Grades 11–12: Difficult

Learn this list of synonyms for difficult.
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Full list of words from this list:

words only definitions & notes
  1. onerous
    burdensome or difficult to endure
  2. herculean
    extremely difficult; requiring great strength
  3. arduous
    difficult to accomplish
  4. laborious
    characterized by effort to the point of exhaustion
  5. rigorous
    demanding strict attention to rules and procedures
  6. taxing
    not easily borne; wearing
  7. ambitious
    requiring full use of your abilities or resources
  8. exacting
    requiring precise accuracy
  9. recondite
    difficult to understand
  10. abstruse
    difficult to understand
  11. grueling
    characterized by effort to the point of exhaustion
  12. toilsome
    characterized by effort to the point of exhaustion
  13. oppressive
    weighing heavily on the senses or spirit
  14. knotty
    making great mental demands
  15. elusive
    difficult to detect or grasp by the mind or analyze
Created on Fri May 01 16:27:26 EDT 2026 (updated Fri May 01 16:38:34 EDT 2026)

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