We don't have synonyms for waift yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are wait, waft and waif.
(n) :
Obsolete form of waif. [(British, law, archaic) An article of movable property which has been found, and of which the owner is not known, such as goods washed up on a beach or thrown away by an absconding thief; such items belong to the Crown, which may grant the right of ownership to them to a lord of a manor.]
(n) :
Obsolete form of waif. [(British, law, archaic) An article of movable property which has been found, and of which the owner is not known, such as goods washed up on a beach or thrown away by an absconding thief; such items belong to the Crown, which may grant the right of ownership to them to a lord of a manor.]