merciless
adjective/ˈmɜːsɪləs/
/ˈmɜːrsɪləs/
- showing no sympathy or kind treatment synonym cruel
- a merciless killer/attack
- the merciless heat of the sun
- She was subjected to the merciless criticism of her opponents.
- It brought relief from the merciless summer heat.
Check pronunciation:
merciless