UB

Initialism

initialism

1. (historical) The Urząd Bezpieczeństwa, a branch of the secret police in communist Poland.
• 2010, Christopher Hitchens, Hitch-22, Atlantic 2011, p. 188:He was still going, and strongly at that, in a tiny apartment much invigilated by the “U.B.” or Polish secret police.
2. (computer, programming, C, C++) Undefined behavior; behavior not defined in the language standard.

Anagrams

• bu , BU, B/U