Where does “whatnot” come from?

Whatnot derives from English what combined with not, from Middle English nat and Old English notu, ultimately from Proto-Indo-European ne meaning negation.

whatnot (English): A small unspecified object; bric-a-brac; Other...

Definitions

  1. A small unspecified object; bric-a-brac; Other...

Ancestry of “whatnot”, step by step

whatnot traces back through two separate lines of ancestry.

via English what

StepLanguageWordMeaning
1EnglishwhatWhich thing, event, circumstance, etc.: used...
2Middle Englishwhatwhat
3Old Englishhwætwhat; why; how many or how much
4Old English-ingForming nouns from verbs, indicating action,...
5Old English-tūnhomestead, village, town
6Old Englishtūnenclosure, yard; place; dwelling
7Proto-West Germanictūnfence
8Proto-Germanictūnąfence; enclosure
9Gaulishdunumfort; hill, hillfort
10Proto-Celticdūnomstronghold, rampart
11Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English Not

StepLanguageWordMeaning
1EnglishNot
2Middle Englishnotnot; nothing, nought; nobody, no person
3Middle Englishnoughtnothing, none; not; iniquitous, wicked
4Old Englishnōwiht
5Old Englishnenot; or, and not; "ne... ne..." is used to mean "...
6Old Englisheallescompletely, wholly, entirely; totally,...
7Old English-espossessive marker, indicating that an object...
8Proto-Germanic-asused in formation of adverbs
9Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
10Proto-Indo-European-ess
11Proto-Indo-European-osCreates action nouns or result nouns from verbs;...
Every word from Proto-Indo-European dʰewh₂-