From Middle English moth, moththe, motthe, moght, mohþe, mouȝte, from Old English moþþe, mohþe, mohþa, from Proto-West Germanic *moþþō, *mottō, from Proto-Germanic *muþþô, *muttô, from Proto-Indo-European *mutn-, *mut-. Cognate with West Frisian mot, Dutch mot, German Low German Motte, Mott, German Motte, Swedish mott, mått.