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Synonyms for Unfold (same or very similar meaning)

WordNet sense 1 (extend or stretch out to a greater or the full length):
extend, stretch, stretch out

WordNet sense 2 (spread out or open from a closed or folded state):
open, spread, spread out

WordNet sense 3 (develop or come to a promising stage):
blossom, blossom forth, blossom out

From the ODE community, based on WordNetadd/edit