We don't have synonyms for manacling yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are menacing, managing and mangling.
(n) :
A shackle for the wrist, usually consisting of a pair of joined rings; a handcuff; (by extension) a similar device put around an ankle to restrict free movement.
(n) :
A shackle for the wrist, usually consisting of a pair of joined rings; a handcuff; (by extension) a similar device put around an ankle to restrict free movement.