IPA: /ˈmɜːrsɪləs/
KK: /ˈmɜr.sɪ.ləs/
Showing no kindness or compassion; being very harsh or cruel.
The merciless storm destroyed many homes along the coast.
Merciless → It is formed from "mercy" (from Old French *merci*, meaning compassion or forgiveness) and "-less" (meaning without). The word "merciless" means without mercy or compassion.
Think of the word 'mercy' which means compassion, and remember that 'merciless' means lacking that compassion.