Synonyms of vestigial

2 Syllables
veiled, latent, sleeping, larval, secret, idle, implied, torpid, tacit, inert, abeyant, lurking, covert, unseen, quiescent
3 Syllables
potential, concealed, involved, inferred, unripe, suspended, possible, inherent, nuts-and-bolts, underlying, suppressed, smoldering, surviving, passive, intrinsic, contained
4 Syllables
unexpressed, unrealized, inactive, immature, inferential, unexposed, invisible, atavistic
5 Syllables
nonliterate, rudimentary, preliterate, undeveloped
6 Syllables
underdeveloped, inoperative