English
Long War
long + war.
Proto-Indo-European *dlongʰos ‘long’
Proto-Germanic *langaz ‘long’
Proto-West Germanic *lang ‘long’
Old English lang ‘long, tall, lasting’
Middle English long
English long
Proto-Indo-European *wers- ‘to mix up, confuse’
…
Medieval Latin werra
Old Northern French werre
Old English werre ‘armed conflict’
Middle English werre
English war
Today it means
name The U.S.'s worldwide actions of assassination strikes, military engagements, and, wars, etc., against Islamist terrorism, since 9/11 (2001-09-11); including the US-Iraq War (Gulf War II), US-Afghanistan War, US Afghanistan Occupation, US Iraq Occupation, War against Da'esh (ISIS's unrecognized state), strikes on Da'esh, strikes on Al'Qaeda, strikes on IS-K.
Language periods are conventional ranges, not dates for this word.
Etymograph / Long War