Where does “unaccomplished” come from?

I need to work with the chain provided, but I notice the chain given appears to trace "accomplish" rather than "unaccomplished." The chain shows: English accomplished | English accomplish | Proto-Indo-European óynos | Proto-Indo-European óynos | Proto-Indo-European ano- | Proto-Indo-European ano- | Latin ad- | Latin ad However, this chain seems incomplete or problematic for deriving "unaccomplished" - it doesn't clearly show the full etymological path, and "unaccomplished" would involve the prefix "un-" which isn't accounted for here. Given the constraints and the chain as stated, here's my best attempt: Unaccomplished derives from English accomplish, ultimately from Latin ad- and Proto-Indo-European ano-, with the privative prefix un- indicating the negation of completion or finished state. However, I must note that this chain

unaccomplished (English): Not accomplished; Not having occurred or been...

Definitions

  1. Not accomplished; Not having occurred or been...

Ancestry of “unaccomplished”, step by step

unaccomplished traces back through two separate lines of ancestry.

via English accomplished

StepLanguageWordMeaning
1EnglishaccomplishedCompleted; effected; established; Having many...
2EnglishaccomplishTo finish successfully; To complete, as time or...
3Middle Englishaccomplisshen
4Old Frenchacomplirto come to an end
5Vulgar Latin*(ac)complīre
6Latincompleōto fill up, fill full, fill out; make up, complete
7Latincōn-Used in compounds to indicate a being or bringing together of several objects
8Latincumwith, along with; at; -fold
9Old LatincomAlternative form of cum
10Proto-Italickomwith, along, at
11Proto-Indo-Europeanḱómbeside, near, by, with
12Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
13Middle Englishkyt
14Germankittputty certain kinds of cement used for fixing e.g. window panes
15Old High Germankuti
16Proto-West Germanickwidugum, resin
17Proto-Germanickweduzresin
18Proto-Indo-Europeangʷet-resin, gum; to say, speak

via English un

StepLanguageWordMeaning
1EnglishunOne

Words derived from “unaccomplished

Every word from Proto-Indo-European gʷet-Every word from Latin cōn-Every word from Proto-Germanic kweduz