Preventive is a related term of disqualifying.

As an adjective preventive

is .

As a verb disqualifying is

.

Zesty is a related term of keen.

As adjectives the difference between zesty and keen

is that zesty is having a piquant or pungent taste; spicy while keen is showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense.

As a verb keen is

(rare) to sharpen; to make cold or keen can be to utter a keen.

As a noun keen is

a prolonged wail for a deceased person.

Shillyshallying is a related term of quirky.

As a noun shillyshallying

is .

As an adjective quirky is

given to quirks or idiosyncrasies; strange in a somewhat silly, awkward manner, potentially cute.

Faint is a related term of murky.

As an adjective faint

is lacking strength; weak; languid; inclined to swoon; as, faint with fatigue, hunger, or thirst.

As a noun faint

is the act of fainting.

As a verb faint

is to lose consciousness caused by a lack of oxygen or nutrients to the brain, usually as a result of a suddenly reduced blood flow (may be caused by emotional trauma, loss of blood or various medical conditions).

As a proper noun murky is

(murcki), a locale in poland.

Contrary is a related term of unpropitious.

As adjectives the difference between contrary and unpropitious

is that contrary is opposite; in an opposite direction; in opposition; adverse while unpropitious is not propitious; unfavourable, untimely.

As an adverb contrary

is contrarily.

As a noun contrary

is the opposite.

As a verb contrary

is (obsolete) to oppose; to frustrate.

Bracing is a related term of rousing.

As verbs the difference between bracing and rousing

is that bracing is while rousing is .

As adjectives the difference between bracing and rousing

is that bracing is invigorating or stimulating while rousing is that rouses or excites.

As nouns the difference between bracing and rousing

is that bracing is a brace while rousing is the act by which somebody or something is roused.

Gruelling is a synonym of hard.

As an adjective gruelling

is so difficult or taxing as to make one exhausted; backbreaking.

As a noun hard is

stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

Extensive is a related term of widened.

As an adjective extensive

is in the nature of an extent, wide, widespread.

As a verb widened is

(widen).

Perverse is a synonym of inflexible.

As adjectives the difference between perverse and inflexible

is that perverse is turned aside; hence, specifically, turned away from the (morally) right; willfully erring; wicked; perverted while inflexible is not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.

Ashy is a related term of white.

As an adjective ashy

is having the color of ashes.

As a proper noun white is

.