lukewarm

As a noun apathy

is complete lack of emotion or motivation about a person, activity, or object; depression; lack of interest or enthusiasm; disinterest.

As an adjective lukewarm is

(label) between warm and cool.

Unconcerned is a related term of lukewarm.

As adjectives the difference between unconcerned and lukewarm

is that unconcerned is indifferent and having no interest; aloof while lukewarm is (label) between warm and cool.

Inattentive is a related term of lukewarm.

As adjectives the difference between inattentive and lukewarm

is that inattentive is of or pertaining to lack of attention; not paying attention; careless while lukewarm is (label) between warm and cool.

As adjectives the difference between lukewarm and undefined

is that lukewarm is (label) between warm and cool while undefined is lacking a definition or value.

As adjectives the difference between aloof and lukewarm

is that aloof is reserved and remote; either physically or emotionally distant; standoffish while lukewarm is (label) between warm and cool.

As an adverb aloof

is at or from a distance, but within view, or at a small distance; apart; away.

As a preposition aloof

is (obsolete) away from; clear of.

As adjectives the difference between lukewarm and scalding

is that lukewarm is between warm and cool while scalding is hot enough to burn.

As a verb scalding is

present participle of lang=en.

As a noun scalding is

an instance of scalding; a burn.

As adjectives the difference between lukewarm and scorching

is that lukewarm is (label) between warm and cool while scorching is very hot.

As a verb scorching is

.

As a noun scorching is

the act or result of something being scorched.

As adjectives the difference between lukewarm and impassioned

is that lukewarm is (label) between warm and cool while impassioned is filled with intense emotion or passion; fervent.

As an adjective lukewarm

is between warm and cool.

As a noun tap is

a tapering cylindrical pin or peg used to stop the vent in a cask; a spigot.

As a verb tap is

to furnish with taps.

As an initialism TAP is

initialism of lang=en.

As adjectives the difference between lukewarm and toasty

is that lukewarm is between warm and cool while toasty is pleasantly warm.