relentless

详细解释:a. 无情的, 冷酷的, 残酷的

词型变化：

名词:relentlessness副词:relentlessly

英语解释：

形容词 relentless:

not to be placated or appeased or moved by entreaty同义词：grim, inexorable, stern, unappeasable, unforgiving, unrelenting