merciless
6 synonyms and 1 antonym for merciless, grouped by meaning and by how common each one is.
Adj — Showing no mercy at all; cruel and unforgiving.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use merciless
The word patterns that sound natural to a native speaker.
Etymology
From Middle English merciles, formed from mercy plus -less, meaning literally "without mercy."
Full origin of merciless →