Intermediary is a related term of transitional.

As adjectives the difference between intermediary and transitional

is that intermediary is intermediate while transitional is of, or relating to a transition.

As a noun intermediary

is an agent acting as a mediator between sides that may disagree.

Showy is a related term of vulgar.

As adjectives the difference between showy and vulgar

is that showy is (sometimes|derogatory) calling attention; flashy; standing out to the eye while vulgar is vulgar.

Criminal is a related term of unrighteous.

As adjectives the difference between criminal and unrighteous

is that criminal is being against the law; forbidden by law while unrighteous is not righteous.

As a noun criminal

is a person who is guilty of a crime, notably breaking the law.

Quicken is a related term of forward.

As verbs the difference between quicken and forward

is that quicken is while forward is to advance, promote.

As nouns the difference between quicken and forward

is that quicken is while forward is (dialectal|or|obsolete) agreement; covenant or forward can be (rugby) one of the eight players (comprising two props, one hooker, two locks, two flankers and one number eight, collectively known as the pack) whose primary task is to gain and maintain possession of the ball (compare back).

As an adjective forward is

toward the front or at the front.

As an adverb forward is

towards the front or from the front.

Resuscitate is a related term of refresh.

As verbs the difference between resuscitate and refresh

is that resuscitate is to restore consciousness, vigor, or life to while refresh is to renew or revitalize.

As an adjective resuscitate

is (obsolete) restored to life.

As a noun refresh is

the periodic energizing required to maintain the contents of computer memory, the display luminance of a computer screen, etc.

As adjectives the difference between unrelenting and enduring

is that unrelenting is not relenting; having no pity; not being or becoming lenient, mild, gentle, or merciful; unyielding; inflexibly rigid; hard; stern; cruel while enduring is long-lasting.

As a verb enduring is

present participle of lang=en.

As a noun enduring is

endurance.

Enhearten is a related term of impel.

As verbs the difference between enhearten and impel

is that enhearten is to comfort and embolden, encourage, animate, hearten while impel is to urge a person; to press on; to incite to action or motion via intrinsic motivation (contrast with propel, to compel or drive extrinsically).

Antagonise is a related term of needle.

As verbs the difference between antagonise and needle

is that antagonise is while needle is to pierce with a needle, especially for sewing or acupuncture.

As a noun needle is

a long, thin, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections etc.

Indifference is a related term of sluggishness.

As nouns the difference between indifference and sluggishness

is that indifference is indifference, uncaringness while sluggishness is the property of being sluggish, unable or unwilling to act quickly.

Wanton is a related term of rakish.

As adjectives the difference between wanton and rakish

is that wanton is (obsolete) undisciplined, unruly; not able to be controlled while rakish is dashingly, carelessly, or sportingly unconventional or stylish; jaunty; characterized by a devil-may-care unconventionality; having a somewhat disreputable quality or appearance.

As a noun wanton

is a pampered or coddled person.

As a verb wanton

is to rove and ramble without restraint, rule, or limit; to revel; to play loosely; to frolic.