strenuous

As a noun strength

is the quality or degree of being strong.

As a verb strength

is (obsolete) to give strength to; to strengthen.

As an adjective strenuous is

urgent, ardent, zealous.

Active is a related term of strenuous.

As a verb active

is .

As an adjective strenuous is

urgent, ardent, zealous.

As adjectives the difference between precise and strenuous

is that precise is exact, accurate while strenuous is urgent, ardent, zealous.

As adjectives the difference between assiduous and strenuous

is that assiduous is hard-working, diligent or regular (in attendance or work); industrious while strenuous is urgent, ardent, zealous.

As adjectives the difference between strenuous and exacting

is that strenuous is urgent, ardent, zealous while exacting is making excessive demands; hard to satisfy.

As a verb exacting is

.

As adjectives the difference between fretful and strenuous

is that fretful is irritable, bad-tempered, grumpy or peevish while strenuous is urgent, ardent, zealous.

As adjectives the difference between enterprising and strenuous

is that enterprising is displaying bravery and daring in the attempt of some task while strenuous is urgent, ardent, zealous.

As adjectives the difference between ambitious and strenuous

is that ambitious is possessing, or controlled by ambition; greatly or inordinately desirous of power, honor, office, superiority, or distinction while strenuous is urgent, ardent, zealous.

As adjectives the difference between energetic and strenuous

is that energetic is possessing, exerting, or displaying energy while strenuous is urgent, ardent, zealous.

As adjectives the difference between industrious and strenuous

is that industrious is hard-working and persistent; worksome while strenuous is urgent, ardent, zealous.