UNBOUND Meaning of UNBOUND in English 1. adj.1 not bound or tied up. 2 unconstrained. 3 a (of a book) not having a binding. b having paper covers. 4 (of a substance or particle) in a loose or free state. 2. past and past part. of UNBIND. Oxford English vocab. Оксфордский английский словарь. 2012