In lang=en terms the difference between vitiate and diminish

is that vitiate is to make something ineffective, to invalidate while diminish is to disappear gradually.

As verbs the difference between vitiate and diminish

is that vitiate is to spoil, make faulty; to reduce the value, quality, or effectiveness of something while diminish is to make smaller.

As verbs the difference between vitiate and negate

is that vitiate is to spoil, make faulty; to reduce the value, quality, or effectiveness of something while negate is to deny the existence, evidence, or truth of; to contradict.

As verbs the difference between quash and handle

is that quash is to defeat forcibly while handle is to use the hands.

As a noun handle is

a part of an object which is held in the hand when used or moved, as the haft of a sword, the knob of a door, the bail of a kettle, etc or handle can be (slang) a name, nickname or pseudonym.

As adjectives the difference between deleterious and lethal

is that deleterious is harmful often in a subtle or unexpected way (as for example deleterious effects, deleterious to health) while lethal is deadly; mortal; fatal.

As a noun lethal is

one of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid.

As a verb tuile is

.

As verbs the difference between underact and overcome

is that underact is to act in an understated manner or with little expressiveness while overcome is to surmount (a physical or abstract obstacle); to prevail over, to get the better of.

As nouns the difference between annexure and exhibit

is that annexure is something annexed while exhibit is an instance of.

As a verb exhibit is

to display or show (something) for others to see, especially at an exhibition or contest.

As an adjective extraneous

is not belonging to, or dependent upon, a thing; without or beyond a thing; foreign.

As a noun appurtenance is

an appendage added to something else.

As adjectives the difference between genious and brilliant

is that genious is while brilliant is shining brightly.

As a noun brilliant is

a finely cut gemstone, especially a diamond, having many facets.

As nouns the difference between archaeology and palaeontology

is that archaeology is the study of the past by excavation and analysis of its material remains: while palaeontology is .