Where does “unprovision” come from?

unprovision (English) comes from English provision, from Middle English provisioun, from Old French provisïon, from Latin prōvīsiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

Ancestry of “unprovision”, step by step

unprovision traces back through two separate lines of ancestry.

via English provision

StepLanguageWordMeaning
1EnglishprovisionAn item of goods or supplies, especially food,...
2Middle EnglishprovisiounPreparations, a readying; something which is set...
3Old Frenchprovisïon
4Latinprōvīsiōforeknowledge
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 un

StepLanguageWordMeaning
1EnglishunOne
Every word from Ancient Greek χάλιξ