Free
Free adjective - Not being in a state of use, activity, or employment.
Usage example: this computer terminal is free if you need to use it
Operational is an antonym for free.
Operational
Both words in one sentence
- He spends his free time from then on making it space-worthy, and gets it fully operational just in time for him to be the Right Man in the Wrong Place to save all of humanity.
Source: Chekhovs Skill / Literature -
When he's on the ground, he gets his foot caught in some exposed wiring from a droid that's been torn in half (but still semi-operational), and his attempts to shake it free cause the droid to fire its weapon at other droids, scoring some kills.
Source: Crouching Moron, Hidden Badass -
At the start of the decade, only a few countries had operational television stations (including the United States, United Kingdom, Germany, France, the Soviet Union, Mexico, the Free City of Danzig, Poland, Japan and Italy), and said stations only broadcast in major cities.
Source: The Forties
Cite this Source
Operational and Free. (2016). Retrieved 2026, August 09, from https://thesaurus.plus/related/free/operational
Free & Operational. N.p., 2016. Web. 09 Aug. 2026. <https://thesaurus.plus/related/free/operational>.
Operational or Free. 2016. Accessed August 09, 2026. https://thesaurus.plus/related/free/operational.
Google Ngram Viewer shows how "free" and "operational" have occurred on timeline