unremitting

As adjectives the difference between unremitting and unrelenting

is that unremitting is incessant; never slackening while unrelenting is not relenting; having no pity; not being or becoming lenient, mild, gentle, or merciful; unyielding; inflexibly rigid; hard; stern; cruel.

As adjectives the difference between perpetual and unremitting

is that perpetual is lasting forever, or for an indefinitely long time while unremitting is incessant; never slackening.

As adjectives the difference between unremitting and indefatigable

is that unremitting is incessant; never slackening while indefatigable is extremely persistent and untiring.

As adjectives the difference between constant and unremitting

is that constant is unchanged through time or space; permanent while unremitting is incessant; never slackening.

As a noun constant

is that which is permanent or invariable.

As adjectives the difference between unremitting and unremittant

is that unremitting is incessant; never slackening while unremittant is unremitting.

As adjectives the difference between unremitting and assiduate

is that unremitting is incessant; never slackening while assiduate is (obsolete) unremitting; assiduous.

As adjectives the difference between unremitting and unintermitting

is that unremitting is incessant; never slackening while unintermitting is (archaic) not intermitting: constant, unceasing, unremitting, without interruption.