altruist

As an adjective bellicose

is warlike in nature; aggressive; hostile.

As a noun altruist is

altruist.

As an adjective selfish

is holding one’s self-interest as the standard for decision making.

As a noun altruist is

altruist.

As nouns the difference between altruist and ascetic

is that altruist is one imbued with altruism while ascetic is one who is devoted to the practice of self-denial, either through seclusion or stringent abstinence.

As an adjective ascetic is

of or relating to ascetics; characterized by rigorous self-denial or self-discipline; austere; abstinent; involving a withholding of physical pleasure.

As nouns the difference between altruist and benevolence

is that altruist is one imbued with altruism while benevolence is disposition to do good.

As an adjective selfless

is having, exhibiting or motivated by no concern for oneself but for others; unselfish.

As a noun altruist is

altruist.

As nouns the difference between altruist and benefactor

is that altruist is one imbued with altruism while benefactor is somebody who gives one a gift. Usually refers to someone who gives money to a charity or another form of organization.

As nouns the difference between altruist and welfare

is that altruist is altruist while welfare is (uncountable) health, safety, happiness and prosperity; well-being in any respect.

As nouns the difference between martyr and altruist

is that martyr is one who willingly accepts being put to death for adhering openly to one's religious beliefs; notably, saints canonized after martyrdom while altruist is altruist.

As a verb martyr

is to make someone into a martyr by putting him or her to death for adhering to, or acting in accordance with, some belief, especially religious; to sacrifice on account of faith or profession.

As nouns the difference between taxonomy and altruist

is that taxonomy is the science or the technique used to make a classification while altruist is altruist.

As nouns the difference between hedonist and altruist

is that hedonist is while altruist is altruist.