strenuous

Strenuous is a related term of formidable.

As adjectives the difference between strenuous and formidable

is that strenuous is urgent, ardent, zealous while formidable is causing fear, dread, awe or admiration as a result of size, strength, or some other impressive quality; commanding respect; causing wonder or astonishment.

Persevering is a related term of strenuous.

As adjectives the difference between persevering and strenuous

is that persevering is tending to persevere while strenuous is urgent, ardent, zealous.

As a noun persevering

is perseverance.

As a verb persevering

is .

Strenuous is a related term of puzzling.

As adjectives the difference between strenuous and puzzling

is that strenuous is urgent, ardent, zealous while puzzling is difficult to understand or explain; enigmatic or confusing; perplexing.

As a verb puzzling is

.

As a noun puzzling is

time spent pondering something confusing.

Strenuous is a related term of cryptic.

As adjectives the difference between strenuous and cryptic

is that strenuous is urgent, ardent, zealous while cryptic is having hidden meaning.

As a noun cryptic is

(informal) a cryptic crossword.

Strenuous is a related term of bustling.

As an adjective strenuous

is urgent, ardent, zealous.

As a verb bustling is

.

As a noun bustling is

a bustle; a busy stir.

As adjectives the difference between strenuous and complicated

is that strenuous is urgent, ardent, zealous while complicated is difficult or convoluted.

As a verb complicated is

past tense of complicate.

Painstaking is a synonym of strenuous.

As adjectives the difference between painstaking and strenuous

is that painstaking is carefully attentive to details; diligent in performing a process or procedure while strenuous is urgent, ardent, zealous.

As a noun painstaking

is the application of careful and attentive effort.

Meticulous is a related term of strenuous.

As adjectives the difference between meticulous and strenuous

is that meticulous is (archaic) timid, fearful, overly cautious while strenuous is urgent, ardent, zealous.

Strenuous is a related term of confusing.

As adjectives the difference between strenuous and confusing

is that strenuous is urgent, ardent, zealous while confusing is difficult to understand; not clear as lacking order, chaotic etc.

As a verb confusing is

.

Scrupulous is a related term of strenuous.

As adjectives the difference between scrupulous and strenuous

is that scrupulous is exactly and carefully conducted while strenuous is urgent, ardent, zealous.