18-letter words containing o, d, i, s, t
- under-compensation — to compensate or pay less than is fair, customary, or expected.
- under-registration — the act of registering.
- united nations day — the anniversary of the United Nations on October 24, marking its founding in 1945.
- urban homesteading — homesteading (def 2).
- video compact disc — (storage) (VCD) A storage format used for film distribution.
- video entry system — a security system whereby a person in a building can see someone who wants to gain access by means of a video image
- video installation — an art installation incorporating video footage
- wardrobe assistant — a person who assists the wardrobe mistress in a theatre
- watson-crick model — a widely accepted model for the three-dimensional structure of DNA, featuring a double-helix configuration for the molecule's two hydrogen-bonded complementary polynucleotide strands.
- wesleyan methodist — a member of any of the churches founded on the evangelical principles of John Wesley.
- white-footed mouse — any of several North American woodland mice of the genus Peromyscus, especially P. leucopus, having white feet and undersides.
- white-spotted hyla — a type of tree frog (H. leucophyllata) of tropical America
- withdrawal symptom — effects of stopping a drug
- woe betide someone — misfortune will befall someone
- wood-burning stove — cooker: fueled by wood