comparative: more merciful superlative: most merciful
Mercy is a noun so it doesn't have a comparative or superlative form. Merciful is the adjective. Comparative is more merciful. Superlative is most merciful
Most merciful
How merciful he was to us.
Allah is very Merciful, if you seek his forgiveness with true heart then he will insha Allah forgive you.
You become a heart surgeon by studying cardiology and specializing in this field. You can take additional classes, residencies and training to become a heart surgeon.
John the Merciful was born in 552.
John the Merciful died in 616.
The merciful king looked with kindness upon his subjects. A merciful god doesn't punish followers harshly.
Mary,the Mother of Jesus was merciful to God.
Cathedral of Our Merciful Saviour was created in 1869.
The opposite of merciful using a prefix is merciless.