ruthless

As adjectives the difference between resolute and ruthless

is that resolute is firm, unyielding, determined while ruthless is without pity or compassion; cruel, pitiless.

As adjectives the difference between ruthless and adamant

is that ruthless is without pity or compassion; cruel, pitiless while adamant is firm; unshakeable; unyielding; determined.

As a noun adamant is

an imaginary rock or mineral of impenetrable hardness; a name given to the diamond and other substances of extreme hardness.

As an adjective ruthless

is without pity or compassion; cruel, pitiless.

As a noun cruelty is

an indifference to suffering or positive pleasure in inflicting suffering.

As adjectives the difference between fearless and ruthless

is that fearless is free from fear while ruthless is without pity or compassion; cruel, pitiless.

As adjectives the difference between honorable and ruthless

is that honorable is worthy of respect; respectable while ruthless is without pity or compassion; cruel, pitiless.

As adjectives the difference between ruthless and inconsiderate

is that ruthless is without pity or compassion; cruel, pitiless while inconsiderate is not considerate of others, thoughtless.

As an adjective ruthless

is without pity or compassion; cruel, pitiless.

As a noun relentlessness is

the condition of being relentless.

As adjectives the difference between ruthless and insensitive

is that ruthless is without pity or compassion; cruel, pitiless while insensitive is not expressing normal physical feeling.

Unfeeling is a related term of ruthless.

As adjectives the difference between unfeeling and ruthless

is that unfeeling is without emotion or sympathy while ruthless is without pity or compassion; cruel, pitiless.

Ruthless is a related term of caustic.

As adjectives the difference between ruthless and caustic

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