inexcusable(not excusable) adjective [UK: ˌɪ.nɪk.ˈskjuː.zəb.l̩] [US: ˌɪ.nɪk.ˈskjuː.zəb.l̩]What you have done is absolutely inexcusable. = Lo que has hecho es totalmente inexcusable.
inexcusablemente adverb
inexcusably(in an inexcusable manner) adverb [UK: i.nexc.usa.bi] [US: i.nexc.usa.bi]