Where does “smogless” come from?

smogless (English) comes from English smog, from English smoke, from Middle English smoke, from Old English smoca, from Proto-Germanic smukô, from Danish smug- — secretly.

smogless (English): Free from smog

Definitions

  1. Free from smog

Ancestry of “smogless”, step by step

smogless traces back through two separate lines of ancestry.

via English smog

StepLanguageWordMeaning
1EnglishsmogA noxious mixture of particulates and gases that...
2EnglishsmokeThe visible vapor/vapour, gases, and fine...
3Middle Englishsmokesmoke
4Old Englishsmocasmoke
5Proto-Germanicsmukôsmoke, nebulous air
6Danishsmug-secretly

via English less

StepLanguageWordMeaning
1EnglishlessTo a smaller extent or degree; comparative form...
2Middle Englishlesfalse; lying; deceptive; falsehood; a lie
3Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
4Proto-Germanic*laus—

Words derived from “smogless”

Every word from Danish smug- →
smogless — Etymology, Origin & Word History | Etymology Explorer