impervious

As adjectives the difference between opaque and impervious

is that opaque is neither reflecting nor emitting light while impervious is unaffected or unable to be affected by.

As a noun opaque

is (obsolete|poetic) an area of darkness; a place or region with no light.

As a verb opaque

is to make, render (more) opaque.

As adjectives the difference between callous and impervious

is that callous is emotionally hardened; unfeeling and indifferent to the suffering/feelings of others while impervious is unaffected or unable to be affected by.

As adjectives the difference between impertinent and impervious

is that impertinent is insolent, ill-mannered while impervious is unaffected or unable to be affected by.

As a noun impertinent

is an impertinent individual.

As adjectives the difference between impervious and unchanging

is that impervious is unaffected or unable to be affected by while unchanging is remaining constantly unchanged.

As an adjective impervious

is unaffected or unable to be affected by.

As a noun water is

(uncountable) a chemical, found at room temperature and pressure as a clear liquid, having the formula h₂o, required by all forms of life on earth.

As a verb water is

to pour water into the soil surrounding (plants).

As a verb impede

is to get in the way of; to hinder.

As an adjective impervious is

unaffected or unable to be affected by.

As a noun immunity

is the state of being insusceptible to something; notably.

As an adjective impervious is

unaffected or unable to be affected by.

Unimpassioned is a related term of impervious.

As adjectives the difference between unimpassioned and impervious

is that unimpassioned is not impassioned; lacking passion; without emotion while impervious is unaffected or unable to be affected by.

As adjectives the difference between impervious and proof

is that impervious is unaffected or unable to be affected by while proof is used in proving or testing.

As a noun proof is

(countable) an effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.

As a verb proof is

to proofread.

As adjectives the difference between impervious and intransigent

is that impervious is unaffected or unable to be affected by while intransigent is unwilling to compromise or moderate a position; unreasonable; irreconcilable; stubborn.