invaginate /in-vajˈi-nāt/

1. To ensheath
2. To dent inwards, push or withdraw within, introvert

1. To be introverted
2. To form a hollow cavity by infolding

• ustilaginous
• Ustilago
• ustion
• ustions
• ustulation
• ustulations
• usu
• usu.
• usual
• usually
• usualness
• usualnesses
• usuals
• usucapient
• usucapients
• usucapion
• usucapions
• usucapt
• usucapted
• usucaptible
• usucapting
• usucaption
• usucaptions
• usucapts
• usufruct