strenuous

Herculean is a synonym of strenuous.

As adjectives the difference between herculean and strenuous

is that herculean is (herculean) while strenuous is urgent, ardent, zealous.

As adjectives the difference between strenuous and complex

is that strenuous is urgent, ardent, zealous while complex is made up of multiple parts; composite; not simple.

As a noun complex is

a problem.

As a verb complex is

to form a complex with another substance.

Strenuous is a related term of knotty.

As adjectives the difference between strenuous and knotty

is that strenuous is urgent, ardent, zealous while knotty is full of knots.

Strenuous is a related term of wearisome.

As adjectives the difference between strenuous and wearisome

is that strenuous is urgent, ardent, zealous while wearisome is tiresome, tedious or causing fatigue.

Strenuous is a related term of perplexing.

As adjectives the difference between strenuous and perplexing

is that strenuous is urgent, ardent, zealous while perplexing is confusing or puzzling.

As a verb perplexing is

.

Strenuous is a related term of lively.

As an adjective strenuous

is urgent, ardent, zealous.

As a proper noun lively is

.

As a proper noun strong

is .

As an adjective strenuous is

urgent, ardent, zealous.

As an adjective strenuous

is urgent, ardent, zealous.

As a noun stern is

a star; a small luminous dot that can be seen on the night sky.

As adjectives the difference between strenuous and intense

is that strenuous is urgent, ardent, zealous while intense is strained; tightly drawn.

Strenuous is a related term of onerous.

As adjectives the difference between strenuous and onerous

is that strenuous is urgent, ardent, zealous while onerous is imposing]] or [[constitute|constituting a physical, mental, or figurative load which can be borne only with effort.