Antonyms of verb unchain

1 of 2 senses of unchain

Sense 1
unchain -- (remove the chains from)
       Antonym of chain (Sense 2)
      => chain -- (fasten or secure with chains; "Chain the chairs together")

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

2 senses of unchain

Sense 1
unchain -- (remove the chains from)
       => unfasten -- (cause to become undone; "unfasten your belt")

Sense 2
unchain -- (make free)
       => free, liberate, release, unloose, unloosen, loose -- (grant freedom to; free from confinement)

Antonyms of adj unchained

1 sense of unchained

Sense 1
unchained, unfettered, unshackled, untied -- (not bound by shackles and chains)

INDIRECT (VIA unbound) -> bound -- (confined by bonds; "bound and gagged hostages")

Similarity of adj unchained

1 sense of unchained

Sense 1
unchained, unfettered, unshackled, untied -- (not bound by shackles and chains)
       => unbound (vs. bound) -- (not restrained or tied down by bonds)