ruthless

Ruthless is a related term of ungentle.

As adjectives the difference between ruthless and ungentle

is that ruthless is without pity or compassion; cruel, pitiless while ungentle is not gentle.

Ruthless is a related term of bitter.

As adjectives the difference between ruthless and bitter

is that ruthless is without pity or compassion; cruel, pitiless while bitter is having an acrid taste (usually from a basic substance).

As a noun bitter is

(usually in the plural bitters) a liquid or powder, made from bitter herbs, used in mixed drinks or as a tonic.

As a verb bitter is

to make bitter.

As adjectives the difference between fiendish and ruthless

is that fiendish is sinister; evil; conniving; in the manner of a fiend while ruthless is without pity or compassion; cruel, pitiless.

Ruthless is a related term of coldblooded.

As adjectives the difference between ruthless and coldblooded

is that ruthless is without pity or compassion; cruel, pitiless while coldblooded is .

Monstrous is a related term of ruthless.

As adjectives the difference between monstrous and ruthless

is that monstrous is hideous or frightful while ruthless is without pity or compassion; cruel, pitiless.

Ruthless is a related term of infernal.

As adjectives the difference between ruthless and infernal

is that ruthless is without pity or compassion; cruel, pitiless while infernal is of or relating to hell, or the world of the dead; hellish.

As a noun infernal is

(obsolete) an inhabitant of the infernal regions.

As adjectives the difference between inhuman and ruthless

is that inhuman is of or pertaining to inhumanity and the indifferently cruel, sadistic or barbaric behavior it brings while ruthless is without pity or compassion; cruel, pitiless.

Ruthless is a related term of diabolical.

As adjectives the difference between ruthless and diabolical

is that ruthless is without pity or compassion; cruel, pitiless while diabolical is extremely wicked or cruel.

Brutish is a related term of ruthless.

As adjectives the difference between brutish and ruthless

is that brutish is of, or in the manner of a brute while ruthless is without pity or compassion; cruel, pitiless.

Enormous is a related term of ruthless.

As adjectives the difference between enormous and ruthless

is that enormous is (obsolete)  deviating from the norm; unusual, extraordinary while ruthless is without pity or compassion; cruel, pitiless.