arrant

形容词 arrant:

1. without qualification; used informally as (often pejorative) intensifiers
   同义词：complete, consummate, double-dyed, everlasting, gross, perfect, pure, sodding, stark, staring, thoroughgoing, utter, unadulterated

1. Don't trust him; he is an arrant hypocrite.
   别相信他，他是个彻头彻尾的伪君子。

ar.rant

adj.（形容词）
Completely such; thoroughgoing:
完全的；彻底的：
例句：
an arrant fool; the arrant luxury of the ocean liner.
十足的傻瓜；极其豪华的定期远洋客轮

来源：
Variant of errant
errant的变体

【引伸】
ar.rantly
adv.（副词）