perfidious
词形变化：
同义词：
faultless | ideal | improve | refine | absolute | complete | hone | tighten up | achieve | finish | finalize | precise | exact | flawless | right | accurate | correct | pure | intact | expert | excellent | strict | finished | proper | faithful | unconditional | definitive | fulfil | mint | consummate | thoroughgoing | gross | double-dyed | perfective | unadulterated | perfect tense | arrant | stark | utter | everlasting | sodding | staring | better |
反义词：
词义辨析：
同义参见:
black
slippery
faithless
disloyal
dishonorable