adj 1: not to be placated or appeased or moved by entreaty;"grim
determination"; "grim necessity"; "Russia's final
hour, it seemed, approached with inexorable
certainty"; "relentless persecution"; "the stern
demands of parenthood [syn: grim, inexorable, relentless, stern, unappeasable, unforgiving]
2: never-ceasing; "the relentless beat of the drums" [syn: persistent, relentless]