RELENTLESS Meaning of RELENTLESS in English adj.Relentless is used with these nouns: ↑ assault , ↑ barrage , ↑ downpour , ↑ drive , ↑ expansion , ↑ march , ↑ onslaught , ↑ pressure , ↑ pursuit , ↑ quest Oxford Collocations English Dictionary. Оксфордский английский словарь словосочетаний . 2012