WordNet (r) 3.0 (2006):

just right
    adv 1: in every detail; "the new house suited them to a T" [syn:
           to a T, to the letter, just right, to perfection]

Moby Thesaurus II by Grady Ward, 1.0:

112 Moby Thesaurus words for "just right":
   OK, a propos, absolute, absolutely, accurate, accurately, ad rem,
   adapted, agreeably, all right, applicable, apposite, appropriate,
   apropos, apt, becoming, befitting, beyond all praise, by consensus,
   chaste, compatibly, completely, concordantly, congenially,
   consonantly, correct, correctly, dead right, defectless,
   dovetailing, entirely, faultless, faultlessly, felicitous, fit,
   fitted, fitting, fittingly, flawless, flawlessly, fully, geared,
   hand in glove, happy, harmoniously, ideal, ideally, immaculate,
   immaculately, impeccable, impeccably, in chorus, in concert,
   in keeping, in line, in step, in unison, indefectible, indefective,
   infallible, infallibly, irreproachable, just, just so,
   letter-perfect, likely, meshing, meticulous, okay, on the button,
   opportune, pat, peerless, perfect, perfectly, proper, properly,
   pure, purely, qualified, relevant, right, rightly, seasonable, sic,
   sinless, so, sortable, spotless, spotlessly, stainless, straight,
   straight-up-and-down, suitable, suited, suiting, tailored,
   taintless, thoroughly, to the point, to the purpose, totally,
   unadulterated, unanimously, unblemished, uncontaminated,
   unfaultable, unmixed, unspotted, untainted, wholly, with it