- Undercroft Subst. Adj.
- Undercrossing Subst. Adj.
- Undercutter Subst. Adj.
- Underdamped Adj. Part. Perf.
- Underdamping Subst. Adj.
- Underdeck Subst. Adj.
- Underdeclaration Subst. Adj.
- Underdense Adj.
- Underdesigned Adj. Part. Perf.
- Underdetermined Adj.
- Underdeveloped Adj.
- Underdog Subst. Adj.
- Underdone Adj.
- Underdrain Subst. Verb Adj.
- Underdrainage Subst. Adj.
- Underdrawing Subst. Adj.
- Underdressed Adj.
- Underdrilling Subst. Adj.
- Underdrive Subst. Verb Adj.
- Underdumped Adj.
- Undereducated Adj. Part. Perf.
- Underemphasised Adj.
- Underemphasized Adj.
- Underemployed Adj. Subst. Part. Perf.
- Underemployment Subst. Adj.
- Underenumeration Subst. Adj.
- Underestimated Adj.
- Underetch Verb Subst. Adj.
- Underetching Subst. Adj.
- Underexcitation Subst. Adj.
- Underexcited Adj. Part. Perf.
- Underexpanded Adj.
- Underexpansion Subst. Adj.
- Underexpenditure Subst. Adj.
- Underexploited Adj.
- Underexposed Adj.
- Underexposure Subst. Adj.
- Underfed Adj.
- Underfeed Verb Adj.
- Underfeeding Subst. Adj.
- Underfelt Subst. Adj.
- Underfifiring Adj.
- Underfill Subst. Verb Adj.
- Underfilled Adj. Part. Perf.
- Underfilling Subst. Adj.
- Underfinanced Adj. Part. Perf.
- Underfired Adj.
- Underfit Verb Adj.
- Underflooding Subst. Part. Präs. Adj.
- Underfloor Subst. Adj.
- Underflow Subst. Verb Adj.
- Underflowing Adj.
- Underfoot Adv. Adj.
- Underframe Subst. Adj.
- Underfrequency Subst. Adj.
- Underfull Adj.
- Underfunding Subst. Adj.
- Underfur Subst. Adj.
- Undergarment Subst. Adj.
- Underglaze Subst. Verb Adj.