erfolgloseste betyder på engelska

most unsuccessful▼◼◼◼

unsuccessful▼◼◼◼adjective
[UK: ˌʌn.sək.ˈses.fl̩] [US: ˌʌn.sək.ˈses.fl̩]

unsuccessfully▼◼◼◻adjective
[UK: ˌʌn.sək.ˈses.fl̩i] [US: ˌʌn.sək.ˈses.fl̩i]

failed▼◼◼◻adjective
[UK: feɪld] [US: ˈfeɪld]

ineffective▼◼◼◻adjective
[UK: ˌɪ.nɪ.ˈfek.tɪv] [US: ˌɪ.nə.ˈfek.tɪv]