Reformation is a related term of emendation.

As a proper noun reformation

is the reformation.

As a noun emendation is

the act of altering for the better, or correcting what is erroneous or faulty; correction; improvement.

As adjectives the difference between vindictive and resentful

is that vindictive is having a tendency to seek revenge when wronged, vengeful while resentful is inclined to resent, who tends to harbor resentment, when wronged.

Constitutional is a related term of licit.

As adjectives the difference between constitutional and licit

is that constitutional is relating to a legal or political constitution while licit is not forbidden by formal or informal rules.

As a noun constitutional

is a walk that is taken regularly for good health and wellbeing.

Authority is a related term of governing.

As a noun authority

is (label) the power to enforce rules or give orders.

As a verb governing is

.

Brutish is a synonym of stupid.

As adjectives the difference between brutish and stupid

is that brutish is of, or in the manner of a brute while stupid is lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence.

As an adverb stupid is

(slang|dated) extremely.

As a noun stupid is

a stupid person; a fool.

Abusive is a related term of scurrile.

In archaic|lang=en terms the difference between abusive and scurrile

is that abusive is (archaic) given to misusing; also, full of abuses while scurrile is (archaic) scurrilous.

As adjectives the difference between abusive and scurrile

is that abusive is wrongly used; perverted; misapplied; unjust; illegal while scurrile is (archaic) scurrilous.

Uncertain is a related term of approximate.

As adjectives the difference between uncertain and approximate

is that uncertain is not certain; unsure while approximate is approaching; proximate; nearly resembling.

As a verb approximate is

to carry or advance near; to cause to approach.

Subvert is a related term of undo.

As verbs the difference between subvert and undo

is that subvert is to overturn from the foundation; to overthrow; to ruin utterly while undo is to reverse the effects of an action.

As a noun subvert

is an advertisement created by subvertising.

As an adjective undo is

.

Unskillful is a related term of uncivilized.

As adjectives the difference between unskillful and uncivilized

is that unskillful is not skillful while uncivilized is crude, barbarous, wild, uncultured.

Plug is a related term of amble.

As verbs the difference between plug and amble

is that plug is to stop with a plug; to make tight by stopping a hole while amble is .

As a noun plug

is (electricity) a pronged connecting device which fits into a mating socket.