sadistic

As an adjective sadistic

is delighting in or feeling pleasure from the pain of others.

As a noun malice is

intention to harm or deprive in an illegal or immoral way desire to take pleasure in another's misfortune.

As an adjective sadistic

is delighting in or feeling pleasure from the pain of others.

As a noun maliciousness is

the condition of being malicious; malevolence or malice.

As a noun sarcasm

is a sharp form of humor, intended to hurt, that is marked by mocking with irony, sometimes conveyed in speech with vocal over-emphasis. Insincerely saying something which is the opposite of one's intended meaning, often to emphasize how unbelievable or unlikely it sounds if taken literally, thereby illustrating the obvious nature of one's intended meaning.

As an adjective sadistic is

delighting in or feeling pleasure from the pain of others.

As adjectives the difference between sarcastic and sadistic

is that sarcastic is containing sarcasm while sadistic is delighting in or feeling pleasure from the pain of others.

As adjectives the difference between sadistic and savage

is that sadistic is delighting in or feeling pleasure from the pain of others while savage is wild; not cultivated.

As a noun savage is

an uncivilized or feral human; a barbarian.

As a verb savage is

to attack or assault someone or something ferociously or without restraint.

As a proper noun Savage is

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As adjectives the difference between sadistic and inhumane

is that sadistic is delighting in or feeling pleasure from the pain of others while inhumane is lacking pity or compassion for misery and suffering; cruel, unkind, not humane.

As adjectives the difference between sadistic and melancholic

is that sadistic is delighting in or feeling pleasure from the pain of others while melancholic is filled with or affected by melancholy—great sadness or depression, especially of a thoughtful or introspective nature.

As a noun melancholic is

a person who is habitually melancholy.

As adjectives the difference between egotistic and sadistic

is that egotistic is egotistical while sadistic is delighting in or feeling pleasure from the pain of others.

As adjectives the difference between masochistic and sadistic

is that masochistic is deriving pleasure from abuse, being punished, or dominated while sadistic is delighting in or feeling pleasure from the pain of others.

As adjectives the difference between sadistic and malevolent

is that sadistic is delighting in or feeling pleasure from the pain of others while malevolent is having or displaying ill will; wishing harm on others.