impassible

As adjectives the difference between aloof and impassible

is that aloof is reserved and remote; either physically or emotionally distant; standoffish while impassible is (chiefly|theology) unable to suffer, or feel pain.

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 an adjective impassible

is (chiefly|theology) unable to suffer, or feel pain.

As a noun dispassion is

freedom from passion; an undisturbed state; apathy.

As adjectives the difference between impassioned and impassible

is that impassioned is filled with intense emotion or passion; fervent while impassible is (chiefly|theology) unable to suffer, or feel pain.