Infirm is a related term of slight.

As adjectives the difference between infirm and slight

is that infirm is weak or ill, not in good health while slight is small, weak or gentle; not decidedly marked; not forcible; inconsiderable; unimportant; insignificant; not severe.

As verbs the difference between infirm and slight

is that infirm is to contradict, to provide proof that something is not while slight is to treat as slight or not worthy of attention, to make light of.

As a noun slight is

the act of slighting; a deliberate act of neglect or discourtesy.

Libel is a synonym of derogate.

In lang=en terms the difference between libel and derogate

is that libel is to defame someone, especially in a manner that meets the legal definition of libel while derogate is to act in a manner below oneself; to debase oneself.

As verbs the difference between libel and derogate

is that libel is to defame someone, especially in a manner that meets the legal definition of libel while derogate is (obsolete|transitive) to partially repeal (a law etc).

As a noun libel

is a written or pictorial statement which unjustly seeks to damage someone's reputation.

As an adjective derogate is

(archaic) debased.

Likely is a related term of sensible.

In obsolete|lang=en terms the difference between likely and sensible

is that likely is (obsolete) similarly while sensible is (obsolete) that which has sensibility; a sensitive being.

As adjectives the difference between likely and sensible

is that likely is probable; having a greater-than-even chance of occurring while sensible is perceptible by the senses.

As nouns the difference between likely and sensible

is that likely is something or somebody considered likely while sensible is (obsolete) sensation; sensibility.

As an adverb likely

is (obsolete) similarly.

Exertion is a related term of using.

As nouns the difference between exertion and using

is that exertion is an expenditure of physical or mental effort while using is use.

As a verb using is

.

In obsolete terms the difference between violent and foul

is that violent is an assailant while foul is ugly; homely; poor.

Impassioned is a related term of hardworking.

As adjectives the difference between impassioned and hardworking

is that impassioned is filled with intense emotion or passion; fervent while hardworking is of a person, taking their work seriously and doing it well and rapidly.

Culpability is a related term of remonstrance.

As nouns the difference between culpability and remonstrance

is that culpability is the degree of one's blameworthiness in the commission of a crime or offence while remonstrance is a remonstration; disapproval; a formal, usually written, protest or objection.

Zeal is a related term of promptness.

As nouns the difference between zeal and promptness

is that zeal is the fervor or tireless devotion for a person, cause, or ideal and determination in its furtherance; diligent enthusiasm; powerful interest while promptness is the habit or characteristic of doing things without delay.

Arctic is a related term of penetrating.

As adjectives the difference between arctic and penetrating

is that arctic is while penetrating is able to pierce or penetrate.

As a proper noun arctic

is .

As a noun arctic

is .

As a verb penetrating is

.

As adjectives the difference between constructive and beneficial

is that constructive is relating to or causing construction while beneficial is helpful or good to something or someone.