He treated his subordinates mercilessly.
She was deeply hurt by his merciless words.
Struggle against a pitiless fate.
The king executed the traitor without mercy.
She was tossed about by a cruel fate.
He pushed her away with cruel, unfeeling words.
非情 means heartless or unfeeling, often used for cold, impersonal decisions or systems, whereas 無慈悲 can carry a more dramatic or moral condemnation.
冷酷 stresses cold-blooded cruelty in a person's character, while 無慈悲 focuses specifically on the absence of mercy toward someone in need.
無慈悲 means 'merciless' in the sense of showing no pity, whereas 残忍 adds a stronger sense of deliberate brutality.
無慈悲 describes a lack of mercy or compassion, while 非道 more broadly condemns an act as morally outrageous.
Compound of 無 (mu, 'without') and 慈悲 (jihi, 'mercy, compassion'). The word 慈悲 itself is a Buddhist term for benevolence and compassion, so 無慈悲 literally means 'without compassion'.