ETYMOLOGY
possibly from maum (mellow, soft, esp. over-ripe) + –ish
EXAMPLE
“…but she fed more vpon fancie, than glutted hir selfe with any cates there presente: more vpon daintie deuices, than any parcell of repast: for this meate forsooth was mawmish, & this melancholie: this dish would driue hir to drincke, and this cause hir to drie…”
From: Narbonus The Laberynth of Libertie
By Austin Saker, 1580
Lexicophilia 