arduous

English Thesaurus

1. difficult to accomplish; demanding considerable mental effort and skill (adj.all)

similar	:	difficult, hard,
definition	:	not easy; requiring great physical or mental effort to accomplish or comprehend or endure (adj.all)

2. characterized by effort to the point of exhaustion; especially physical effort (adj.all)

similar	:	effortful, effortful,
definition	:	requiring great physical effort (adj.all)

3. difficult to accomplish; demanding considerable mental effort and skill (adj.all)

derivation	:	arduousness, strenuousness,
definition	:	extreme effortfulness (noun.attribute)

4. characterized by effort to the point of exhaustion; especially physical effort (adj.all)

derivation	:	labor, labour, toil,
definition	:	productive work (especially physical work done for wages) (noun.act)

derivation	:	arduousness, strenuousness,
definition	:	extreme effortfulness (noun.attribute)

derivation	:	laboriousness, operoseness, toilsomeness,
definition	:	the quality of requiring extended effort (noun.attribute)

derivation	:	hardness, ruggedness,
definition	:	the quality of being difficult to do (noun.attribute)

derivation	:	burdensomeness, heaviness, onerousness, oppressiveness,
definition	:	unwelcome burdensome difficulty (noun.attribute)

5. taxing to the utmost; testing powers of endurance (adj.all)

derivation	:	nisus, pains, strain, striving,
definition	:	an effortful attempt to attain a goal (noun.act)

derivation	:	arduousness, strenuousness,
definition	:	extreme effortfulness (noun.attribute)

6. difficult to accomplish; demanding considerable mental effort and skill (adj.all)

derivation	:	arduousness, strenuousness,
definition	:	extreme effortfulness (noun.attribute)

7. characterized by effort to the point of exhaustion; especially physical effort (adj.all)

derivation	:	labor, labour, toil,
definition	:	productive work (especially physical work done for wages) (noun.act)

derivation	:	arduousness, strenuousness,
definition	:	extreme effortfulness (noun.attribute)

derivation	:	laboriousness, operoseness, toilsomeness,
definition	:	the quality of requiring extended effort (noun.attribute)

derivation	:	hardness, ruggedness,
definition	:	the quality of being difficult to do (noun.attribute)

derivation	:	burdensomeness, heaviness, onerousness, oppressiveness,
definition	:	unwelcome burdensome difficulty (noun.attribute)

8. taxing to the utmost; testing powers of endurance (adj.all)

derivation	:	nisus, pains, strain, striving,
definition	:	an effortful attempt to attain a goal (noun.act)

derivation	:	arduousness, strenuousness,
definition	:	extreme effortfulness (noun.attribute)