Synonyms and related words :
chase, chasing, continualness, continuance, continuation, continuity, dogging, endurance, extension, follow, follow-up, following, heeling, hounding, hue and cry, hunting, lengthening, maintenance, perpetuation, perseverance, persistence, progress, progression, prolongation, prosecution, protraction, pursual, pursuing, pursuit, quest, repetition, run, search, searching, seeking, sequel, sequence, series, shadowing, stalking, staying power, straight course, sustained action, sustenance, tailing, tracking, tracking down, trailing, uninterrupted course, unremittingness, way