18-letter words containing u, n, r, e, f, d
- shift one's ground — to change one's argument or defense
- soldier of fortune — a person who independently seeks pleasure, wealth, etc., through adventurous exploits.
- sound and the fury — a novel (1929) by William Faulkner.
- squinting modifier — a word or phrase that can modify either the words that precede it or those that follow, as frequently in the sentence Studying frequently is tedious.
- sulfuric anhydride — sulfur trioxide.
- sunflower seed oil — the oil extracted from sunflower seeds, used as a salad oil, in the manufacture of margarine, etc
- under the aegis of — guided or protected by
- wildlife sanctuary — an area where wild animals and plants are protected
- xenon hexafluoride — a colorless, crystalline compound, XeF 6 , that melts at 50°C to a yellow liquid, and boils at 75°C.