Where does “inadjustable” come from?

inadjustable (English) comes from English adjustable, from English adjust, from Middle English ajusten, from Middle French adjuster, from Latin iūstus, from Latin iūs, from Latin dīcō, from Latin -tiō — limestone; chalk; the finish line.

Ancestry of “inadjustable”, step by step

inadjustable traces back through two separate lines of ancestry.

via English adjustable

StepLanguageWordMeaning
1Englishadjustablecapable of being adjusted; Anything that can be...
2EnglishadjustTo modify; To improve or rectify; To settle an...
3Middle Englishajusten
4Middle Frenchadjuster
5Latiniūstusjust, righteous
6Latiniūslaw, right
7Latindīcōto say, talk, speak, utter, mention
8Latin-tiōtion, -ation, -ing
9Latindissertātiō(spoken) dissertation, discourse, disquisition
10Latindissertusarranged, disposed; explained
11Latindissereresecond-person singular future passive indicative...
12Latindis-asunder, apart, in two; reversal, removal;...
13Latincalceusshoe
14Latincalxlimestone; chalk; the finish line

via English in

StepLanguageWordMeaning
1EnglishinUsed to indicate location, inclusion, or position...
2Middle EnglishinAny kind of accomodation; particularly; A home or...
3Old Englishinin; Alternative form of inn
4Proto-West Germanic*in
Every word from Latin calx
inadjustable — Etymology, Origin & Word History | Etymology Explorer