superfluous

As an adjective superfluous

is in excess of what is required or sufficient.

As a noun overflow is

the spillage resultant from overflow; excess.

As a verb overflow is

to flow over the brim of (a container).

As an adjective superfluous

is in excess of what is required or sufficient.

As a noun discourse is

(uncountable|archaic) verbal exchange, conversation.

As a verb discourse is

to engage in discussion or conversation; to converse.

As adjectives the difference between affluent and superfluous

is that affluent is abundant; copious; plenteous while superfluous is in excess of what is required or sufficient.

As a noun affluent

is somebody who is wealthy.

Superfluous is a related term of plentiful.

As adjectives the difference between superfluous and plentiful

is that superfluous is in excess of what is required or sufficient while plentiful is existing in large number or ample amount.

As adjectives the difference between superfluous and exuberant

is that superfluous is in excess of what is required or sufficient while exuberant is very high-spirited; extremely energetic and enthusiastic.

As an adjective superfluous

is in excess of what is required or sufficient.

As a noun gay is

nape.

As a verb gay is

to crow.

As adjectives the difference between supercilious and superfluous

is that supercilious is arrogantly superior; showing contemptuous indifference; haughty while superfluous is in excess of what is required or sufficient.

As adjectives the difference between necessary and superfluous

is that necessary is needed, required while superfluous is in excess of what is required or sufficient.

As a noun necessary

is (archaic|british) bathroom, toilet, loo.

As adjectives the difference between superfluous and prodigal

is that superfluous is in excess of what is required or sufficient while prodigal is wastefully extravagant.

As a noun prodigal is

a prodigal person, a spendthrift.

Auxiliary is a related term of superfluous.

As adjectives the difference between auxiliary and superfluous

is that auxiliary is helping]]; [[give|giving assistance or support while superfluous is in excess of what is required or sufficient.

As a noun auxiliary

is a person or group that acts in an auxiliary manner.