Can Relentless Be an Adjective?

RELENTLESS (adjective) definition and synonyms | Macmillan Dictionary.

Is relentless a noun verb or adjective?

This shows grade level based on the word's complexity. not easing or slackening; maintaining speed, vigor, etc.: a relentless barrage of bad news. unyieldingly severe, strict, or harsh: a relentless crackdown on human rights.

What is a noun for relentless?

relentlessness. The condition of being relentless.