Where does “irrationalness” come from?

irrationalness (English) comes from English irrational, from Latin irratiōnālis, from Latin rationalis, from Latin ratiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

irrationalness (English): The quality of being irrational

Definitions

  1. The quality of being irrational

Ancestry of “irrationalness”, step by step

irrationalness traces back through two separate lines of ancestry.

via English irrational

StepLanguageWordMeaning
1EnglishirrationalNot rational; unfounded or nonsensical; Of a real...
2Latinirratiōnālisirrational
3Latinrationalisaccounts; rational, reasonable, of or possessing...
4Latinratiōreason, reasoning, explanation, ground, motive, rationality, rationale, purpose
5Latin-tiōtion, -ation, -ing
6Latindissertātiō(spoken) dissertation, discourse, disquisition
7Latindissertusarranged, disposed; explained
8Latindissereresecond-person singular future passive indicative...
9Latindis-asunder, apart, in two; reversal, removal;...
10Latincalceusshoe
11Latincalxlimestone; chalk; the finish line
12Ancient 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 χάλιξEvery word from Latin -tiōEvery word from Latin dis-
irrationalness — Etymology, Origin & Word History | Etymology Explorer