English
alt-light
Blend of alt-right + light.
Proto-Indo-European *lewk- ‘to shine’
…
Proto-Germanic *leuhtą
Proto-West Germanic *leuht ‘light’
Old English lēoht
Middle English light ‘light, illumination’
English light
Today it means
noun A nebulous grouping of far-right people and ideologies, mostly active on the internet, who are largely aligned with the alt-right but reject explicit white nationalism and anti-Semitism.
Language periods are conventional ranges, not dates for this word.
Etymograph / alt-light