6,078 articles
Sierra Sounds
Sierra Sounds, also called the Bigfoot Recordings or samurai chatter, are 1971-1974 tapes of purported Bigfoot vocalizations recorded by Ron Morehead, Al Berry, and hunters at a High Sierra deer camp, analyzed by Kirlin and Hertel and still disputed.
Sigma Chi (ΣΧ)
Sigma Chi (ΣΧ) is an international social fraternity founded June 28, 1855 at Miami University in Oxford, Ohio by seven former Delta Kappa Epsilon members, with over 255,000 living members, Evanston, Illinois headquarters, and a documented record of chapter hazing sanctions.
Significant other
Significant other (SO): a gender-neutral term for a spouse or long-term romantic partner that presumes nothing about marital status or orientation; in sociology and psychology it instead means anyone, such as a parent or peer, who strongly shapes a person's self-concept.
Sikhism in Canada
Sikhism in Canada: the Sikh religion and community in Canada, from early Punjabi migration to British Columbia, the 1908 continuous journey regulation and Komagata Maru, to 771,790 Sikhs (2.1%) in the 2021 Census, the largest Sikh population outside India.
Silent Generation
The Silent Generation is the American cohort born 1928-1945, between the Greatest Generation and Baby Boomers. Named by TIME in 1951, it is small (about 19 million), conformist and civic-minded in image, and the most Republican living generation.
Silla Bang
Silla Bang (신라방) were self-governing communities of Silla expatriates in Tang China, formed from the 8th century on the Shandong Peninsula and Jianghuai region, anchoring Yellow Sea trade.
Silly season
Silly season: the summer period, especially in Britain, when Parliament's recess leaves newspapers filling pages with trivial stories; also US political campaign absurdity; first recorded in the 1860s.
Silva Method
Silva Method (originally Silva Mind Control), self-help and meditation program created by José Silva in Laredo, Texas, launched 1966; teaches alpha-state relaxation, visualization, and self-suggestion. Its paranormal claims (telepathy, remote healing) lack controlled scientific support.
Silvia Federici
Silvia Federici (born 1942, Parma) is an Italian feminist scholar and Wages for Housework co-founder, professor emerita at Hofstra University, author of Caliban and the Witch (2004), which links witch-hunts to capitalist primitive accumulation.
Simeon Boikov (Симеон Бойков)
Simeon Boikov (Симеон Бойков), aka "Aussie Cossack", is an Australian-born pro-Russian activist and disinformation distributor, hiding in Sydney's Russian consulate since 2023, granted Russian citizenship in 2023, EU-sanctioned in 2025, and tied to Storm-1516 paid amplification.
Simon Leviev (שמעון יהודה חיוט)
Simon Leviev (Shimon Yehuda Hayut), Israeli con man who posed as diamond heir Lev Leviev's son to defraud Tinder matches; subject of 2022 Netflix film The Tinder Swindler; convicted in Israel 2019, arrested in Georgia 2025.
Simon task
The Simon task is a conflict paradigm in psychology in which responses are faster when a stimulus's irrelevant location matches the required left or right response.
Simone and Malcolm Collins
Simone and Malcolm Collins are American pronatalist advocates, founders of the Pronatalist Foundation and hosts of the podcast Based Camp, known for IVF with embryo IQ screening, Techno-Puritanism, Trump administration policy drafts, and the Hope Not Hate city-state proposal.
Simp
Simp is internet slang for someone, usually a man, showing excessive devotion to a romantic interest without reciprocation. Clipped from "simpleton" (1903), it spread via hip-hop, the manosphere, and TikTok's 2019 Simp Nation trend.
Sindhis (سنڌي)
Sindhis (سنڌي) are an Indo-Aryan people of Sindh in the lower Indus valley, Pakistan, speaking Sindhi; split by the 1947 Partition into a Muslim majority in Pakistan (14.31% of the 2023 census) and a Hindu diaspora in India and worldwide.
Sindhis in India
Sindhis in India: the Hindu Sindhi community, about one million people, who migrated from Sindh, Pakistan, after the 1947 Partition; deterritorialized refugees known for trade, language shift, and Sindhi's Eighth Schedule status.
Sindhutai Sapkal
Sindhutai Sapkal (सिंधुताई सपकाळ), the 'Mother of Orphans', Indian social worker from Maharashtra who raised over a thousand orphans, founded multiple ashrams, and received the Padma Shri in 2021; died in Pune on 4 January 2022.
Sineenatha
Sineenatha (Sineenat Wongvajirapakdi, born Niramon Aunprom/Ounprom, 1985) is the Royal Noble Consort of Thailand's King Maha Vajiralongkorn, appointed July 2019, demoted October 2019, reinstated August 2020; distinct from the Telugu poet Śrīnātha.
Singaporeans
Singaporeans are the citizens of Singapore, independent since 9 August 1965. Covers the resident and total population (6.21 million in June 2026), CMIO ethnic classification (74.3% Chinese, 13.5% Malay, 9.0% Indian in 2020), multiracial nation-building, four official languages, and the National Pledge identity.
Single parent
Single parent: a person raising children without a co-resident spouse or partner, also called lone parent. Definitions vary by agency; about 25% of US children and 10-25% of OECD children live in single-parent households.
Single person
Single person: an unpartnered adult, often in a one-person household. Distinguished from living alone, social isolation, and loneliness; US one-person households reached 29% in 2025.
Single-case experimental design
A single-case experimental design is a psychology and education research method in which one participant or unit is measured repeatedly, providing its own control across baseline and intervention phases.
Sinhalese people (සිංහල ජනතාව)
Sinhalese people (සිංහල ජනතාව), Sri Lanka's largest ethnic group: Sinhala-speaking, mostly Theravada Buddhist, 74.12% of the 2024 census population, tracing origins to Prince Vijaya and shaped by caste, kinship, and Sinhala Buddhist nationalism.
Sinking of MV Teratai Prima
The sinking of MV Teratai Prima was a 2009 ferry disaster in which an Indonesian ferry capsized in the Makassar Strait off Majene, West Sulawesi, leaving 313 dead or missing.
Sino-Mauritian
Sino-Mauritian refers to Mauritians of Chinese ancestry, descended mostly from Hakka migrants from southern China who settled on the island in the 19th and early 20th centuries.
Sinti
The Sinti are a Romani people of Central and Western Europe, distinct from the Roma by self-identification and the Romanes language; a recognized national minority in Germany since 1995, targeted in the Nazi genocide.
Sioux
The Sioux (Oceti Sakowin, Seven Council Fires) are Northern Plains Native peoples in Lakota, Dakota, and Nakota divisions; "Sioux" is a French adaptation of an Ojibwe word meaning enemy, still used in treaties and tribal legal names.
Siranudh Scott
Siranudh 'Psi' Scott (สิรณัฐ สก๊อต), born 1996, Thai-Scottish marine conservationist and fourth-generation Bhirombhakdi heir to the Singha beer empire; founder of Sea You Strong, endurance swimmer, and in 2026 accuser of his brother Sunit Scott of sexual abuse.
Sissy
Sissy is a derogatory American term for a man or boy perceived as weak or effeminate. It originated from the word sister in the late 1800s.
Sister Cindy
Sister Cindy (Cindy Smock, nee Lasseter), American open-air evangelist of Campus Ministry USA with late husband Brother Jed; preaching on campuses since 1979, TikTok-famous since 2021 for "Ho No Mo" abstinence sermons.