1. A mild, rare, congenital form of myotonia characterized by muscle stiffness
   - myotonia congenita

Type of: myotonia

• underdacks
• underdaks
• underdevelop
• underdeveloped
• underdevelopment
• underdo
• underdog
• underdone
• underdrawers
• underdress
• underdressed
• undereducated
• underemployed
• underemployment
• underestimate
• underestimation
• underevaluation
• underexpose
• underexposure
• underfed
• underfeed
• underfelt
• underfoot
• underframe
• underfur