15-letter words containing o, u, t, p, d
- unleaded petrol — petrol containing a reduced amount of tetraethyl lead
- unprotected sex — an act of sexual intercourse or sodomy performed without the use of a condom, thus involving the risk of sexually transmitted diseases
- unprotectedness — the state of being unprotected or defenceless against attack
- unsophisticated — not sophisticated; simple; artless.
- 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.
- wood turpentine — turpentine obtained from pine trees.
- young pretender — a member of the royal family that ruled in Scotland from 1371 to 1714 and in England from 1603 to 1714.