1. Without pity; in a merciless manner
   - mercilessly, pitilessly, unmercifully

See also: remorseless

• heterogeneous
• heterogeneousness
• heterogenesis
• heterogenous
• heterograft
• heteroicous
• Heterokontae
• Heterokontophyta
• heterologic
• heterological
• heterologous
• heterology
• Heteromeles
• Heteromeles arbutifolia
• heteromerous
• heterometabolic
• heterometabolism
• heterometabolous
• heterometaboly
• heteromorphic
• Heteromyidae
• heteronomous
• heteronomy
• heteronym
• heterophil antibody