1. In a compulsive manner
   - compulsively, obsessively

See also: obsessional

• undermine
• undermost
• underneath
• undernourish
• undernourished
• undernourishment
• underpants
• underpart
• underpass
• underpay
• underpayment
• underperform
• underperformer
• underpin
• underpinning
• underplant
• right-winger
• righteous
• righteously
• righteousness
• righteye flounder
• righteyed flounder
• rightfield
• rightful
• rightfully