/ ʌnˈfəʊld; NAmE ʌnˈfoʊld/ verb
1.
to spread open or flat sth that has previously been folded; to become open and flat :
[ vn ]
to unfold a map
She unfolded her arms.
[also v ]
OPP fold
2.
to be gradually made known; to gradually make sth known to other people :
[ v ]
The audience watched as the story unfolded before their eyes.
[ vn ]
She unfolded her tale to us.
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WORD ORIGIN
Old English unfealdan (from un- and the verb fold ).