Autonomous
Autonomous adjective - Not being under the rule or control of another.
Effective and autonomous are semantically related. In some cases you can use "Effective" instead an adjective "Autonomous".
Effective
Effective adjective - Producing or capable of producing a desired result.
Autonomous and effective are semantically related. Sometimes you can use "Autonomous" instead an adjective "Effective".
Both words in one sentence
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Truly autonomous drones are currently only used for reconnaissance and surveillance missions where their long endurance truly makes them more effective that piloted aircraft.
Source: Attack Drone - The New York headquarters of the United Nations are autonomous such that anyone entering there has effective diplomatic immunity, even if they're on a country's most wanted war criminal/terrorist/dictator shitlist.
Source: Truce Zone -
GURPS: Transhuman Space has "Autonomous Kill Vehicles", small ships piloted by sometimes AIs (which may or may not be sapient) or occasionally Ghosts whose main function is to ram enemy ships (since explosives aren't very effective in space).
Source: Action Bomb
Cite this Source
Effective and Autonomous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/autonomous/effective
Autonomous & Effective. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/autonomous/effective>.
Effective or Autonomous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/autonomous/effective.
Google Ngram Viewer shows how "autonomous" and "effective" have occurred on timeline