пропадать înseamnă în Engleză

disappear [disappeared, disappearing, disappears]▼(to vanish)
verb
[UK: ˌdɪ.sə.ˈpɪə(r)] [US: ˌdɪ.sə.ˈpɪr]

fade [faded, fading, fades]▼(to vanish)
verb
[UK: feɪd] [US: ˈfeɪd]

perish [perished, perishing, perishes]▼(to decay and disappear; to waste away to nothing)
verb
[UK: ˈpe.rɪʃ] [US: ˈpe.rɪʃ]