15-letter words containing d, i, o, p, t
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- underpopulation — having a population lower than is normal or desirable.
- underproduction — production that is less than normal or than is required by the demand.
- undisappointing — not disappointing
- 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.
- well-positioned — condition with reference to place; location; situation.
- wind-pollinated — being pollinated by airborne pollen.
- windfall profit — a profit that arises thanks to an external event over which the person profiting had no control
- wood turpentine — turpentine obtained from pine trees.
- write-protected — (of a computer disk) having been protected from accidental writing or erasure