unˈboundable,a. (un-1 7 b.) 1622R. Harris Gods Goodnes 17 Mercy in the first sense, is Negatiuely endlesse, that is, vncapable of end, because vnboundable for being.1837Emerson Misc. (1855) 91 Who shall set a barrier on any one side to this unbounded, unboundable empire?