Proto-Germanic *hardijaną

→ Old English hierdan (inherited)

→ Catalan ardit (derived)

→ Finnish kärsiä (derived)

→ Old French hardir (derived)

→ Galician ardido (derived)

→ Westrobothnian hehl (inherited)

→ Old Swedish hærþa (inherited)

→ Icelandic herða (derived)

→ Old Norse herða (inherited)