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

(at) one time, former(ly)

• guideline
• guidelines
• guidepost
• guideposts
• guider
• guide rail
• guide rails
• guide rope
• guide ropes
• guiders
• guides
• guideship
• guideships
• guiding
• guiding light
• guiding lights
• guidings
• guiding star
• guidon
• guidons
• Guignol
• Guignols
• guild
• guild-brother
• guild-brothers