Confidential Informant; Any individual under the direction of a police officer who furnishes information about criminal activity with or without compensation; works under direction of the department; different from other concerned citizens or complainants not working under department direction and not party to the investigation itself.

Defines Central Illinois. Coined by two private audience improv comics/freestyle rappers known as "My 2 Dads" or "M2D" at Eastern Illinois University in 2001

Short for "cisgender" (opposite of "transgender"), used to describe someone whose gender identity matches their anatomical gender at birth.

Occasionally used derogatorily.

Commonwealth of Independent States; putative successor to the USSR, except that the Baltic Republics of Estonia, Latvia, and Lithuania never joined. Contrary to another definition of CIS at the Urban Dictionary, the CIS does not stand for "Communist Independent States." Moreover, that definition has the CIS existing BEFORE 1991, and includes Kazakhstan as "not officially part of the Soviet Union." Kazakhstan was, in fact, one of the 15 republics of the USSR until 1991.

The CIS came into being December 1991. Mostly consists of regularly scheduled conferences of foreign ministers and defense ministers.

In 1995, members Belarus and Russia created the Commonwealth of Sovereign Republics (CSR).

Abbreviation for the Confederacy of Independant Systems. Second worst faction in the Star Wars universe beaten only by the wretched Alliance to Restore the Republic/New Republic as THE worst.

Cisgender (opposite for transgender). People who like the gender they were born with.

(1) Citizenship and Immigration Services; the successor to the investigations and processing arm of the former Immigration and Naturalization Services (INS) of the USA. In 2003, the INS was dissolved and its enforcement arm transferred to the new Immigration and Customs Enforcement (ICE). The INS had formerly been part of the Justice Department; the CIS is part of the Department of Homeland Security (DHS).

(2) Center for Immigration Studies, a thinktank founded by John Tanton as a project of FAIR. The Southern Poverty Law Center (SPLC) lists the CIS as a racist nativist organization with extensive connections with other rightwing organizations.