As adjectives the difference between still and collected

is that still is not moving; calm while collected is cool‐headed, emotionally stable, in focus.

As verbs the difference between still and collected

is that still is to calm down, to quiet while collected is past tense of collect.

As an adverb still

is up to a time, as in the preceding time.

As a noun still

is a period of calm or silence.

Custodian is a related term of vigilante.

As nouns the difference between custodian and vigilante

is that custodian is a person entrusted with the custody or care of something or someone; a caretaker or keeper while vigilante is a person who considers it their own responsibility to uphold the law in their neighborhood and often does so summarily and without legal jurisdiction.

Manage is a related term of counteract.

As verbs the difference between manage and counteract

is that manage is to direct or be in charge of while counteract is to act in opposition to; thwart; to hinder, defeat, or frustrate, by contrary agency or influence; as, to counteract the effect of medicines; to counteract good advice.

As a noun manage

is the act of managing or controlling something.

Diffident is a synonym of lowly.

As adjectives the difference between diffident and lowly

is that diffident is (archaic): lacking confidence in others; distrustful while lowly is not high; not elevated in place; low.

As an adverb lowly is

in a low manner; humbly; meekly; modestly.

Distemper is a related term of ailing.

As nouns the difference between distemper and ailing

is that distemper is (veterinary medicine|pathology) a viral disease of animals, such as dogs and cats, characterised by fever, coughing and catarrh while ailing is an ailment.

As verbs the difference between distemper and ailing

is that distemper is to temper or mix unduly; to make disproportionate; to change the due proportions of while ailing is .

As an adjective ailing is

sickly; sick; ill; unwell.

Speed is a related term of bustle.

As a proper noun speed

is .

As a noun bustle is

an excited activity; a stir.

As a verb bustle is

to move busily and energetically with fussiness (often followed by about ).

As adjectives the difference between irrecoverable and unalterable

is that irrecoverable is not recoverable or admitting of recovery; incapable of being recovered: as, an irrecoverable debt while unalterable is incapable of changing or being altered.

Worthless is a related term of inconstant.

As adjectives the difference between worthless and inconstant

is that worthless is not having worth and use, without value, inconsequential while inconstant is not constant; wavering.

Case is a synonym of predicament.

As nouns the difference between case and predicament

is that case is (label) abstract feature of a noun phrase that determines its function in a sentence, such as a grammatical case and a position while predicament is a definite class, state or condition.

Dense is a related term of sturdly.