Word Study
impeccable
CIDE DICTIONARY
impeccable, a. [L. impeccabilis; pref. im- not + peccare to err, to sin: cf. F. impeccable.].
Not liable to sin; exempt from the possibility of doing wrong. [1913 Webster]
"God is infallible, impeccable, and absolutely perfect." [1913 Webster]
OXFORD DICTIONARY
impeccable, adj.
1 (of behaviour, performance, etc.) faultless, exemplary.
2 not liable to sin.
1 (of behaviour, performance, etc.) faultless, exemplary.
2 not liable to sin.
Derivative
impeccability n. impeccably adv.
Etymology
L impeccabilis (as IN-(1), peccare sin)
THESAURUS
impeccable
absolute, accurate, beyond all praise, blameless, chaste, clean, correct, defectless, destitute, errorless, exact, exquisite, faultless, flawless, ideal, immaculate, impecunious, impoverished, indefectible, indefective, indigent, infallible, irreproachable, just right, necessitous, needy, nice, peerless, penurious, perfect, poverty-stricken, precise, proper, pure, right, sinless, spotless, stainless, taintless, unadulterated, unblemished, uncontaminated, undefiled, unerring, unfaultable, unflawed, unimpeachable, unmixed, unprosperous, unsoiled, unspotted, unsullied, untainted, whiteROGET THESAURUS
impeccable
Perfection
N perfection, perfectness, indefectibility, impeccancy, impeccability, pink, beau ideal, phenix, paragon, pink of perfection, acme of perfection, ne plus ultra, summit, cygne noir, philosopher's stone, chrysolite, Koh-i-noor, model, standard, pattern, mirror, admirable Crichton, trump, very prince of, masterpiece, superexcellence, transcendence, perfect, faultless, indefective, indeficient, indefectible, immaculate, spotless, impeccable, free from imperfection, unblemished, uninjured, sound, sound as a roach, in perfect condition, scathless, intact, harmless, seaworthy, right as a trivet, in seipso totus teres atque rotundus, consummate, finished, best, model, standard, inimitable, unparagoned, unparalleled, superhuman, divine, beyond all praise, sans peur et sans reproche, to perfection, perfectly, ad unguem, clean, clean as a whistle, let us go on unto perfection, the perfection of art is to conceal art.For further exploring for "impeccable" in Webster Dictionary Online