stern 2 
(stûrn)
(stûrn)n.
1. Nautical The rear part of a ship or boat.
2. A rear part or section.
[Middle English sterne, perhaps of Scandinavian origin; akin to Old Norse stjōrn, rudder; see stā- in the Appendix of Indo-European roots.]
- understandingly
- understate
- understated
- understatedly
- understatement
- understeer
- understood
- understory
- understratum
- understudy
- undersubscribed
- undersupply
- undersurface
- undertake
- undertaker
- undertaking
- under the circumstances
- under the counter
- under-the-counter
- under the gun
- under the hammer
- under the influence
- under the knife
- under the rose
- under the skin