umquhile or umwhile /umˈhwīl/ (archaic, chiefly Scot)

(at) one time, former(ly)

• museum
• museum beetle
• museum beetles
• museum piece
• museum pieces
• museums
• mush
• musha
• mushed
• musher
• mushers
• mushes
• mushier
• mushiest
• mushily
• mushiness
• mushinesses
• mushing
• mushmouth
• mush-mouthed
• mushmouths
• mushroom
• mushroom-anchor
• mushroom-anchors
• mushroom cloud