Where does “underaction” come from?

underaction (English) comes from English action, from Middle English accioun, from Old French aucion, from Latin āctiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

underaction (English): Subordinate action; a minor action incidental or...

Definitions

  1. Subordinate action; a minor action incidental or...

Ancestry of “underaction”, step by step

underaction traces back through two separate lines of ancestry.

via English action

StepLanguageWordMeaning
1EnglishactionSomething done, often so as to accomplish a...
2Middle EnglishacciounAn action; an act, behaviour or attribute
3Old Frenchaucionaction; act; deed
4Latināctiōaction; a doing or performing, behavior
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 under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Ancient Greek χάλιξ