— relentlessly , adv. — relentlessness , n.
/ri lent"lis/ , adj.
that does not relent; unyieldingly severe, strict, or harsh; unrelenting: a relentless enemy.
[ 1585-95; RELENT + -LESS ]
Syn . rigid, unbending, obdurate, adamant, unyielding. See inflexible .
Ant . merciful.