We don't have synonyms for slap-back yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are snap back, slip back and slapback.
(adj) :
(music) when bass strings are slapped rather plucked individually.
(n) :
(aerial freestyle skiing) a faulty landing, whereby the skier rotates backwards around the knee-joint and hits the snow of the landing slope with their back and head, before rising off the snow back into position with their skis underneath them.
(adj) :
(music) when bass strings are slapped rather plucked individually.
(n) :
(aerial freestyle skiing) a faulty landing, whereby the skier rotates backwards around the knee-joint and hits the snow of the landing slope with their back and head, before rising off the snow back into position with their skis underneath them.