10-letter words starting with si
- sit pretty — to rest with the body supported by the buttocks or thighs; be seated.
- sit shivah — to mourn
- sitophobia — abnormal aversion to food.
- sitosterol — any of five steroid alcohols having the formula C 2 2 H 5 0 O, especially the beta form, obtained from various plant sources: used in organic synthesis.
- sivash sea — a salt lagoon in S Ukraine, on the N of the Crimea peninsula. About 990 sq. mi. (2560 sq. km).
- six-footer — a person who is roughly six feet tall.
- six-seater — a vehicle vehicle providing seats for six people
- six-storey — having six floors or storeys
- sixth form — secondary school: final 2 years
- sixth year — (in Scotland) the most senior class in a secondary school to which pupils, usually above the legal leaving age, may proceed to take sixth-year studies, retake or take additional Highers, etc
- sixtus iii — Saint, pope a.d. 432–440.
- sixty-five — a cardinal number, 60 plus 5.
- sixty-four — a cardinal number, 60 plus 4.
- sixty-nine — a cardinal number, 60 plus 9.
- sixtypenny — noting a nail 6 inches (15 cm) long. Abbreviation: 60d.
- size queen — a man or woman who prefers a sexual partner with a large penis
- sizzlingly — in a sizzling manner