unde - vari
- undecipherable
- undecked
- undecked boat
- undecked vessel
- undefined
- undefined term
- undeflected wave
- undegenerate
- undegraded
- undegraded neutron
- undelayed
- undelayed neutron
- undemped
- under annealing
- under asphalt
- under construction
- under impression print
- under no-load conditions
- under plate
- under repair
- under travel
- under-burnt
- under-compensation
- under-contact rail
- under-cooled hearth bottom
- under-exposure
- under-feed furnace
- under-paster installation
- under-relaxation
- under-sanded mix
- under-wing tank
- underabsorption of ink
- underaction
- underactive
- underannealing
- underbead crack
- underbearer
- underbed
- underbelly
- underbitten
