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

(at) one time, former(ly)

• form teacher
• form teachers
• form tutor
• formula
• formulable
• formulae
• formulaic
• formular
• formularies
• formularisation
• formularise
• formularised
• formularises
• formularising
• formularistic
• formularization
• formularize
• formularized
• formularizes
• formularizing
• formulary
• formulas
• formulate
• formulated
• formulates