Adjective: unrelenting ,ún-ri'len-ting
- Never-ceasing
"the unrelenting beat of the drums";
- persistent, relentless
- Not to be placated, appeased or moved by entreaty
"unrelenting determination";
- grim, inexorable, relentless, stern, unappeasable, unforgiving
- Punishingly harsh
"the unrelenting summer sun";
- brutal
See also: continual, implacable, intense
Encyclopedia: Unrelenting