Talk:mam

Is there any source for the Celtic origin? It would seem to me that this childish word simply has a tendency to approach the cardinal vowel. That's why it's "mom" in North America, "mum"  in southern England, and "mam"  in northern England. All dialects use the vowel closest to in their respective inventories. Luxipa (talk) 16:39, 13 December 2018 (UTC)