Antonyms of verb unbind

1 sense of unbind

Sense 1
unbind -- (untie or unfasten; "unbind the feet of this poor woman")
       Antonym of bind (Sense 3)
      => bind -- (make fast; tie or secure, with or as if with a rope; "The Chinese would bind the feet of their women")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb unbind

1 sense of unbind

Sense 1
unbind -- (untie or unfasten; "unbind the feet of this poor woman")
       => detach -- (cause to become detached or separated; take off; "detach the skin from the chicken before you eat it")

Antonyms of adj unbound

3 senses of unbound

Sense 1
unbound (vs. bound) -- (not secured within a cover; "an unbound book")

bound (vs. unbound) -- (secured with a cover or binding; often used as a combining form; "bound volumes"; "leather-bound volumes")
        => brassbound -- (having trim or fittings of brass; "a brassbound campaign chest"; "the heavy brassbound door")
        => cased -- (enclosed in a case)
        => half-bound -- ((of books) having the back bound in one material and the sides in another)
        => paperback, paperbacked -- ((of books) having a flexible binding)
        => well-bound -- ((of books) having a sturdy and attractive binding)

Sense 2
unbound (vs. bound) -- (not restrained or tied down by bonds)

bound (vs. unbound) -- (confined by bonds; "bound and gagged hostages")
        => chained, enchained -- (bound with chains; "enchained demons strained in anger to gnaw on his bones"; "prisoners in chains")
        => fettered, shackled -- (bound by chains fastened around the ankles)
        => furled, rolled -- (rolled up and secured; "furled sails bound securely to the spar"; "a furled flag"; "his rolled umbrella hanging on his arm")
        => pinioned -- (bound fast especially having the arms restrained)
        => tethered -- (confined or restricted with or as if with a rope or chain)
        => trussed, tied -- (bound or secured closely; "the guard was found trussed up with his arms and legs securely tied"; "a trussed chicken")
        => wired -- (tied or bound with wire; "wired bundles of newspapers")

Sense 3
unbound -- (not held in chemical or physical combination)

INDIRECT (VIA free) -> bound -- (held with another element, substance or material in chemical or physical union)

Similarity of adj unbound

3 senses of unbound

Sense 1
unbound (vs. bound) -- (not secured within a cover; "an unbound book")
       => looseleaf -- (being or having leaves that can be easily removed or rearranged; "loose-leaf paper"; "a looseleaf notebook")

Sense 2
unbound (vs. bound) -- (not restrained or tied down by bonds)
       => unchained, unfettered, unshackled, untied -- (not bound by shackles and chains)
       => untethered -- (not confined or restricted with a tether)
          Also See-> free#1

Sense 3
unbound -- (not held in chemical or physical combination)
       => free (vs. bound) -- (unconstrained or not chemically bound in a molecule or not fixed and capable of relatively unrestricted motion; "free expansion"; "free oxygen"; "a free electron")