We don't have synonyms for still-born yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are skill, still and stall.
(adj) :
dead at birth (also in figurative sense, as of plan, plot, etc.); that has failed to attract an audience (as of a motion picture, music album, show, or electronic game)
(adj) :
dead at birth (also in figurative sense, as of plan, plot, etc.); that has failed to attract an audience (as of a motion picture, music album, show, or electronic game)