- 1
Unrelenting or unyielding in severity.
- She sniffed, too, comprehendingly, and fixed her son with a relentless eye.
- 2
Steady and persistent; unremitting.
- In Clintonworld, the reaction to Grassley’s relentless assault on Huma is one of resignation.
syn. bateless · grim · incontestable · inexorable · invincible · irresistible · overpowering · overwhelming · potent · puissant · persistent · relentless
ant. contestable · exorable · impotent · relenting · remitting · stoppable · underwhelming · vincible