unmerciful

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

having or showing no mercy
- the merciless enemy
- a merciless critic
- gave him a merciless beating
• Syn:
merciless
• Ant:
merciful (for: merciless)
• Similar to:
cutthroat, fierce, bowelless, mortal, pitiless,
remorseless, ruthless, unpitying, tigerish
• See Also:
bloody, hard, inclement, implacable, uncompassionate, unkind
• Derivationally related forms:
unmercifulness, mercilessness (for: merciless)