Where does “reasonlessness” come from?

reasonlessness (English) comes from English reasonless, from English reason, from Middle English resoun, from Anglo-Norman raisun, from Old French reson, from Latin ratiō, from Latin -tiō, from Latin dissertātiō — small stone, pebble; gravel, rubble.

reasonlessness (English): Absence of reason

Definitions

  1. Absence of reason

Ancestry of “reasonlessness”, step by step

reasonlessness traces back through two separate lines of ancestry.

via English reasonless

StepLanguageWordMeaning
1EnglishreasonlessLacking reason or purpose
2EnglishreasonA cause
3Middle Englishresounresound; reason
4Anglo-NormanraisunAlternative form of reson
5Old Frenchresonlogic, logical reasoning
6Latinratiōreason, reasoning, explanation, ground, motive, rationality, rationale, purpose
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Ancient Greek χάλιξ