'unde'-'upse'
- undemonstrative
- undemonstratively
- undemonstrativeness
- undeniable
- undeniably
- undenominational
- undependable
- under
- under a cloud
- under a mask
- under a spell
- under a strain
- under advice
- under advisement
- under age
- under an obligation
- under arms
- under arrest
- under canvas
- under certain conditions
- under compulsion
- under consideration
- under constraints
- under construction
- under control
- under cover
- under cover of night
- under cover of the night
- under direction of
- under discussion
- under duress
- under escort
- under fire
- under glass
- under his hand
- under his orders
- under his vine and under his fig tree
- under lock and key
- under no circumstances
- under no consideration