arduous

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. characterized by effort to the point of exhaustion;
especially physical effort (Freq. 1)
- worked their arduous way up the mining valley
- a grueling campaign
- hard labor
- heavy work
- heavy going
- spent many laborious hours on the project
- set a punishing pace
• Syn:
backbreaking, grueling, gruelling, hard, heavy,
laborious, operose, punishing, toilsome
• Similar to:
effortful
• Derivationally related forms:
toilsomeness (for: toilsome), operoseness (for: operose), labor (for: laborious), laboriousness (for: laborious), heaviness (for: heavy), hardness (for: hard), arduousness
2. taxing to the utmost;
testing powers of endurance
- his final, straining burst of speed
- a strenuous task
- "your willingness after these six arduous days to remain here"- F.D.Roosevelt
• Syn:
straining, strenuous
• Similar to:
effortful
• Derivationally related forms:
strain (for: strenuous), strenuousness (for: strenuous), arduousness
3. difficult to accomplish;
demanding considerable mental effort and skill
- the arduous work of preparing a dictionary
• Similar to:
difficult, hard
• Derivationally related forms:
arduousness

• Từ đồng nghĩa / Synonyms:
  straining, strenuous