See faultless in Webster's New World Roget's A-Z Thesaurus II
adjective
Free from guilt or blame:
blameless, guiltless, harmless, innocent, irreproachable, lily-white, unblamable. (Slang) clean. Idiom: in the clear. See rightSupremely excellent in quality or nature:
absolute, consummate, flawless, impeccable, indefectible, perfect, unflawed. See good
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