blekna bedeutet auf Englisch

blanch [blanched, blanching, blanches]▼(to grow or become white)
verb
[UK: blɑːntʃ] [US: ˈblæntʃ]

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

pale [paled, paling, pales]▼(to become pale)
verb
[UK: peɪl] [US: ˈpeɪl]John turned pale. = John bleknade.