Where does “observerless” come from?

observerless (English) comes from English observer, from English observe, from Middle French observer, from Latin observo, from Latin ob-, from Latin obolus, from Ancient Greek ὀβολός, from Ancient Greek ὀβελός — to throw, reach, pierce; to hit by throwing.

observerless (English): Without observers

Definitions

  1. Without observers

Ancestry of “observerless”, step by step

observerless traces back through two separate lines of ancestry.

via English observer

StepLanguageWordMeaning
1EnglishobserverOne who makes observations, monitors or takes...
2EnglishobserveTo notice or view, especially carefully or with...
3Middle Frenchobserver
4LatinobservoI observe, watch; I guard, keep watch over; I...
5Latinob-towards; against
6Latinobolusobolus (Greek coin)
7Ancient Greekὀβολόςobol, obolus, used at Athens as both a weight and...
8Ancient Greekὀβελόςa spit, rod; a horizontal line
9Ancient Greekβέλοςmissile, arrow, dart; weapon; something quickly...
10Proto-Indo-EuropeangʷélHos
11Proto-Indo-EuropeangʷelH-to throw, reach, pierce; to hit by throwing

via English less

StepLanguageWordMeaning
1EnglishlessTo a smaller extent or degree; comparative form...
2Middle Englishlesfalse; lying; deceptive; falsehood; a lie
3Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
4Proto-Germanic*laus
Every word from Proto-Indo-European gʷelH-