The meaning of MERCILESS is having or showing no mercy : pitiless. How to use merciless in a sentence.

MERCILESS definition: 1. having or showing no mercy: 2. having or showing no mercy: 3. showing no kindness; cruel: . Learn more.

Definition of merciless adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If you describe someone as merciless, you mean that they are very cruel or determined and do not show any concern for the effect their actions have on other people.

Feb 16, 2026 · Adjective merciless (comparative more merciless, superlative most merciless) Showing no mercy; cruel and pitiless. Synonyms: unmerciful, cruel, pitiless, ruthless; see also Thesaurus: …

1. kindness towards a person, especially an enemy, who is in one's power.

MERCILESS definition: without mercy; having or showing no mercy; pitiless; cruel. See examples of merciless used in a sentence.

Use the adjective merciless to describe someone who acts in a cruel, heartless way. You could accuse your rabbit-hunting brother of being merciless. Merciless is the antonym, or opposite, of "merciful." If …

Merciless definition: Having no mercy; cruel.

Merciless refers to someone or something showing no kindness, compassion, or forgiveness, particularly in instances where these qualities could be considered as warranted.