Where does “アーマー” come from?

アーマー (Japanese) comes from English Armagh, from Irish Ard Mhacha, from Middle Irish Ard Macha, from Old Irish Ard Machae, from Old Irish ard, from Proto-Celtic ardwos, from Proto-Indo-European h₃erdʰwós, from Proto-Indo-European h₃erdʰ- — Creates adjectives from verb stems.

Ancestry of “アーマー”, step by step

StepLanguageWordMeaning
1EnglishArmaghwhich is the county town Irish grid ref H 8745
2IrishArd Mhacha
3Middle IrishArd Macha
4Old IrishArd Machae
5Old Irishardhigh; height
6Proto-Celticardwoshigh
7Proto-Indo-Europeanh₃erdʰwós
8Proto-Indo-Europeanh₃erdʰ-to increase, grow; upright, high
9Proto-Indo-European-wósCreates adjectives from verb stems
Every word from Proto-Indo-European -wósEvery word from Proto-Indo-European h₃erdʰ-Every word from Proto-Indo-European h₃erdʰwós
アーマー — Etymology, Origin & Word History | Etymology Explorer