We don't have synonyms for tick-tack yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are ticktack, ticktock and tick-tock.
(n) :
Alternative form of tick tack, the sound of tapping; a device to tap on a window [(onomatopoeia) The sound of repeated tapping, knocking, or clicking.]
(n) :
Alternative form of tic-tac, a sign language used by bookmakers [(British) A system of sign language used by bookmakers at racecourses to communicate odds and bets; an associated group of words for each sign.]
(n) :
Alternative form of tick tack, the sound of tapping; a device to tap on a window [(onomatopoeia) The sound of repeated tapping, knocking, or clicking.]
(n) :
Alternative form of tic-tac, a sign language used by bookmakers [(British) A system of sign language used by bookmakers at racecourses to communicate odds and bets; an associated group of words for each sign.]