per·fect (pûrfkt) KEY
per·fect·ed, per·fect·ing, per·fects (pr-fkt)
Middle English perfit, from Old French parfit, from Latin perfectus, past participle of perficere, to finish : per-, per- + facere, to do; see dh- in Indo-European roots
perfect, consummate, faultless, flawless, impeccable
These adjectives mean being wholly without flaw: a perfect diamond; a consummate performer; faultless logic; a flawless instrumental technique; speaks impeccable French.
Some people maintain that perfect is an absolute term like chief and prime, and therefore cannot be modified by more, quite, relatively, and other qualifiers of degree. But the qualification of perfect has many reputable precedents (most notably in the preamble to the U.S. Constitution in the phrase "in order to form a more perfect Union"). By the same token, perfect often means "ideal for the purposes," as in There could be no more perfect spot for the picnic, where modification by degree makes perfect sense. See Usage Notes at absolute, equal, unique.