Definition of belies:
(v) :
(transitive) To give a false representation of.
(v) :
(transitive) To contradict, to show (something) to be false.
(v) :
(transitive, perhaps nonstandard) To conceal the contradictory or ironic presence of (something).
(v) :
(transitive, perhaps nonstandard) To show, evince or demonstrate (something) to be present, particularly something deemed contradictory or ironic.
(v) :
(transitive, obsolete) To lie around; encompass.
(v) :
(transitive, obsolete, of an army) To surround; beleaguer.