„toughen“: transitive verb toughen [ˈtʌfən]transitive verb | transitives Verb v/t Overview of all translations (For more details, click/tap on the translation) zäher zäh(er)or | oder od fest(er) machen, abhärten toughen toughen „toughen“: intransitive verb toughen [ˈtʌfən]intransitive verb | intransitives Verb v/i Overview of all translations (For more details, click/tap on the translation) zäher zäh(er)or | oder od fest(er) werden toughen toughen