without reverence, mercy, or pity; merciless; wicked; cruel.

In a bad sense: Merciless, cruel. Obsolete.

Of a person or animal, their actions, mind, or attributes: fierce, savage; cruel, ruthless; dreadful, terrible. Also in cruel and fell, fierce an…

Unmerciful; cruel, pitiless. Also as n.: unmerciful people collectively.

Of a person or animal: insolent in triumph or prosperity; having no regard for justice, propriety, or the feelings or rights of others; reckless…

Of persons, their attributes, actions, etc.: without mercy; showing no mercy; pitiless, unrelenting.

Esp. of a person: not having or exercising mercy; cruel, pitiless. Frequently with to, towards. Cf. earlier unmerciable, adj.

Merciless, unfeeling, cruel, pitiless. Obsolete.

Of an action or attribute: without mercy; merciless, relentless.

Unmerciful, merciless. Cf. un-, prefix1 affix 10a.

Showing no forbearance or mercy.

Unsparing, merciless.

Inhuman, inhumane, unmerciful, cruel. Of persons.

Not merciful or kindly; pitiless, harsh, severe, cruel. Obsolete.

Merciless.