Similar word to significative:

adumbrated, alluded to, allusive, connoted, constructive, figured, foreshadowed, hidden, implicit, indicated, indicative, indirect, inferential, inferred, inherent, insinuated, intended, involved, latent, lurking, meant, occult, parallel, perceptible, potential, significative, signified, suggested, symbolized, tacit, tacitly assumed, undeclared, understood, unexpressed, unsaid, unspoken, unuttered, wordless