15-letter words containing d, u, b, i, o
- upward mobility — movement from one social level to a higher one (upward mobility) or a lower one (downward mobility) as by changing jobs or marrying.
- upwardly mobile — See under vertical mobility (def 1).
- us savings bond — A US Savings bond is a long-term bond issued by the US government that is considered low-risk.
- wheelchairbound — Confined to a wheelchair.
- ytterbium oxide — a colorless compound, Yb 2 O 3 , used in certain alloys and ceramics.