1. Expression of hesitation
   - er, uh

Encyclopedia: Um

• well-shaven
• well-situated
• well-spoken
• well-thought-of
• well-thumbed
• well-timed
• well-to-do
• well-tried
• well-turned
• well-versed
• well-wisher
• well-wishing
• well-worn
• wellbeing
• wellborn
• wellerism
• Welles
• wellhead
• wellie
• wellington
• Wellington boot
• wellness
• wellpoint
• Wells
• wellspring