Coterie is a related term of squad.

As nouns the difference between coterie and squad

is that coterie is a circle of people who associate with one another while squad is a group of people organized for some common purpose, usually of about ten members.

Brutish is a related term of fiendish.

As adjectives the difference between brutish and fiendish

is that brutish is of, or in the manner of a brute while fiendish is sinister; evil; conniving; in the manner of a fiend.

As adjectives the difference between fiery and ablaze

is that fiery is of or relating to fire while ablaze is burning fiercely; in a blaze; on fire.

As an adverb ablaze is

on fire; in a blaze, gleaming.

Guesswork is a related term of inference.

As nouns the difference between guesswork and inference

is that guesswork is an estimate, judgment or opinion made by guessing, from limited information while inference is inference.

Diversion is a related term of romp.

As nouns the difference between diversion and romp

is that diversion is fun, entertainment, levity while romp is a period of boisterous play, a frolic.

As a verb romp is

to play about roughly, energetically or boisterously.

Dark is a related term of lightless.

As adjectives the difference between dark and lightless

is that dark is having an absolute or (more often) relative lack of light while lightless is lacking light; unilluminated.

As a noun dark

is a complete or (more often) partial absence of light.

Interest is a synonym of suspicion.

As nouns the difference between interest and suspicion

is that interest is while suspicion is the act of suspecting something or someone, especially of something wrong.

As verbs the difference between interest and suspicion

is that interest is to engage the attention of; to awaken interest in; to excite emotion or passion in, in behalf of a person or thing while suspicion is (nonstandard|dialect) to suspect; to have suspicions.

Unusual is a related term of sick.

As adjectives the difference between unusual and sick

is that unusual is unlike what is expected; differing in some way from the norm while sick is in poor health.

As a noun sick is

sick people in general as a group.

As a verb sick is

to vomit or sick can be (rare).

Unfeeling is a related term of unmerciful.

As adjectives the difference between unfeeling and unmerciful

is that unfeeling is without emotion or sympathy while unmerciful is not showing mercy.

Permanent is a related term of unshakable.

As adjectives the difference between permanent and unshakable

is that permanent is without end, eternal while unshakable is that cannot be shaken or moved; unfaltering or unwavering.

As a noun permanent

is a chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.

As a verb permanent

is (dated) to perm (the hair).