411 REFERENCE · Wiktionary
NOT
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Appendix:Variations of "not"
English
Noun
en mathematics logic A unary operation on logical values that changes true to false, and false to true.
en William Bahn Boolean Algebra Laws—Delving Into Boolean Identities All About Circuits https://www.allaboutcircuits.com/technical-articles/boolean-identities/ 2022-08-04 Notice that the NOT symbol is simply a BUF symbol followed by a bubble. The bubble represents logical inversion and is the actual NOT gate. Anytime you see a bubble attached to a gate pin, you can detach it from the pin and insert a separate NOT gate in its place without affecting the resulting logic. https://web.archive.org/web/20261005084434/https://www.allaboutcircuits.com/technical-articles/boolean-identities/ 5 October 2026
Usage notes
The symbols ¬, !, ~, ˈ and overbar (as in Ā for "not A") have all been used for the NOT operator in various contexts.
Boolean variables and states (en AND, en OR, en NOT, en TRUE, en FALSE etc.) are commonly written in all uppercase in order to distinguish them from the ordinary uses of the words.
+ NOT truth table Input Output 0 1 1 0
Synonyms
en ¬
en !
en ~
en ˈ
Derived terms
en NAND
en NOR
en XNOR
Translations
NOT
French: fr NON m
German: de Nicht
Japanese: ja NOT notto, ja 否定 hitei
See also
negation
Anagrams
en not -ton NTO ONT Ont Ont. TNO TON on't ton
Polish
Etymology
pl Naczelna Organizacja Techniczna Chief Technical Organization.
Pronunciation
LL-Q809 (pol)-Olaf-NOT.wav
Proper noun
n 1
pl w:pl:Naczelna Organizacja Techniczna: Polish Federation of Engineering Associations
Declension
Indeclinable, or:
s NOT NOTu NOTowi NOT NOTem Nocie Nocie
Further reading