9-letter words containing a, u, s, o
- suctorian — a suctorial animal.
- suffocate — to kill by preventing the access of air to the blood through the lungs or analogous organs, as gills; strangle.
- sugarcoat — to cover with sugar: to sugarcoat a pill.
- sugarloaf — a large, usually conical loaf or mass of hard refined sugar: the common form of household sugar until the mid-19th century.
- sulcation — having long, narrow grooves or channels, as plant stems, or being furrowed or cleft, as hoofs.
- sulfation — Chemistry. a salt or ester of sulfuric acid.
- sulfonate — an ester or salt derived from a sulfonic acid.
- sum total — complete numerical total: the sum total of my savings.
- summation — the act or process of summing.
- superatom — a cluster of atoms behaving in certain ways like a single atom
- supernova — the explosion of a star, possibly caused by gravitational collapse, during which the star's luminosity increases by as much as 20 magnitudes and most of the star's mass is blown away at very high velocity, sometimes leaving behind an extremely dense core.
- superroad — an extremely large road
- supinator — a muscle used in supination.
- sur-royal — crown antler.
- surf boat — a strong, buoyant rowboat with high ends, adapted for beaching and passing through surf.
- surfboard — a long, narrow board on which a person stands or lies prone in surfboarding.
- surrogacy — the state of being a surrogate or surrogate mother.
- surrogate — a person appointed to act for another; deputy.
- swarthout — Gladys, 1904–69, U.S. soprano.
- swear out — to make a solemn declaration or affirmation by some sacred being or object, as a deity or the Bible.
- sweat out — to perspire, especially freely or profusely.
- synagogue — a Jewish house of worship, often having facilities for religious instruction.
- tantalous — containing trivalent tantalum.
- tartarous — consisting of or containing tartar.
- tau cross — a T -shaped cross.
- taxaceous — belonging to the Taxaceae, the yew family of plants.
- tease out — If you tease out information or a solution, you succeed in obtaining it even though this is difficult.
- teleosaur — a type of crocodile from the Jurassic period
- tenacious — holding fast; characterized by keeping a firm hold (often followed by of): a tenacious grip on my arm; tenacious of old habits.
- thallious — having a surplus of thallium
- theaceous — belonging to the Theaceae, the tea family of plants.
- thousands — a cardinal number, 10 times 100.
- togavirus — a virus belonging to the Togaviridae family and which usually affects birds and mammals rather than humans
- tokushima — a seaport on NE Shikoku, in SW Japan.
- trigamous — of or relating to trigamy or a trigamist.
- trousseau — an outfit of clothing, household linen, etc., for a bride.
- tuscarora — a member of an Indian people living originally in North Carolina and later, after their admission into the Iroquois confederacy, in New York.
- tyrannous — tyrannical.
- ulmaceous — belonging to the Ulmaceae, the elm family of plants.
- ultraposh — extremely posh
- ultraslow — extremely slow
- ultrasoft — extremely soft
- ulyanovsk — a city in the W Russian Federation, on the Volga River: birthplace of Lenin.
- unanimous — of one mind; in complete agreement; agreed.
- unanxious — not anxious or concerned
- unaroused — to stir to action or strong response; excite: to arouse a crowd; to arouse suspicion.
- unawesome — not awesome
- uniparous — Zoology. producing only one egg or offspring at a time.
- uniramous — Biology. having one branch.
- unjealous — not jealous