"The terms of the contract inadvertently left certain unbound aspects to subjective interpretation.; The hostages' hands were left unbound.; an unbound book; Helium-2 is unbound, as it is energetically favorable for it to split into two separate protons."
3.AdjectiveNot obligated.
"The terms of the contract inadvertently left certain unbound aspects to subjective interpretation."
4.AdjectiveNot tied up.
"The hostages' hands were left unbound."
5.AdjectiveWithout a binding.
"an unbound book"
6.AdjectiveLying beyond the proton or neutron drip line; having a negative particle separation energy; capable of decaying by the spontaneous exothermic emission of one or more nucleons.
"Helium-2 is unbound, as it is energetically favorable for it to split into two separate protons."