Where does “neversmoker” come from?

neversmoker (English) comes from English smoker, from English -er, from Middle English -er, from Old French -er, from Latin -āre, from Proto-Italic -āō, from Proto-Indo-European -eh₂yéti, from Proto-Indo-European -yéti — he, she.

Ancestry of “neversmoker”, step by step

neversmoker traces back through two separate lines of ancestry.

via English smoker

StepLanguageWordMeaning
1EnglishsmokerA person who smokes tobacco habitually; A smoking...
2English-erA person or thing that does an action indicated...
3Middle English-eragentive suffix; agent noun suffix
4Old French-erAlternative form of -ier, verbal suffix;...
5Latin-ārefirst conjugation
6Proto-Italic-āōForms primarily denominative verbs
7Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English Never

StepLanguageWordMeaning
1EnglishNeverAt no time; on no occasion; in no circumstance
2Middle Englishneverenever
3Old Englishnǣfrenever
Every word from Chichewa iye