We don't have synonyms for footfalls yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are football, foothills and footfall.
(N) :
a lostThe Library of Congress/FIAF American Silent Feature Film Survival Catalog: Footfalls 1921 American silent mystery film directed by Charles Brabin and starring Tyrone Power Sr. that was based upon the short story Footfalls by Wilbur Daniel Steele writing in Tower of Sand and Other Stories.
(N) :
a lostThe Library of Congress/FIAF American Silent Feature Film Survival Catalog: Footfalls 1921 American silent mystery film directed by Charles Brabin and starring Tyrone Power Sr. that was based upon the short story Footfalls by Wilbur Daniel Steele writing in Tower of Sand and Other Stories.