←
Old English ompre (cognate)
←
Proto-Germanic *ampraz (inherited)
←
Proto-Germanic *ambraz (inherited)
←
Middle High German ampfer (inherited)
←
Old Swedish amper (cognate)
←
Old High German ampfaro (inherited)
←
Proto-Indo-European *amrós (inherited)
←
Old Norse apr (cognate)
←
Sanskrit अम्ल (cognate)
→
Afrikaans amper (cognate)