Where does “malinstruction” come from?

malinstruction (English) comes from English instruction, from Middle English instruccioun, from Old French instruccion, from Latin instructio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

Ancestry of “malinstruction”, step by step

malinstruction traces back through two separate lines of ancestry.

via English instruction

StepLanguageWordMeaning
1EnglishinstructionThe act of instructing, teaching, or furnishing...
2Middle Englishinstruccioun
3Old Frenchinstruccion
4LatininstructioA constructing, erecting, building, insertion; An...
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 mal

StepLanguageWordMeaning
1Englishmalillness, affliction; A longboard; Malleolus
2Frenchmaltrouble, difficulty; pain; evil
3Old Frenchmalevilly; badly; poorly; evil
4Latinmalleushammer, mallet; a disease of animals; the...
5Proto-Indo-Europeanmelh₂-no-
6Proto-Indo-Europeanmelh₂-to grind, to crush
7Proto-Indo-Europeanmel-soft; tender; weak; to deceive; to rub
8Proto-Indo-Europeanmey-to strengthen; to bind; to change, exchange
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-
malinstruction — Etymology, Origin & Word History | Etymology Explorer