Where does “underluminous” come from?

underluminous (English) comes from English luminous, from Middle French lumineus, from Latin luminosus, from Latin lūmen, from English -escence, from Latin -escens, from Latin -esco, from Latin -eo — Creates transitive imperfective verbs from roots.

underluminous (English): Insufficiently luminous

Definitions

  1. Insufficiently luminous

Ancestry of “underluminous”, step by step

underluminous traces back through two separate lines of ancestry.

via English luminous

StepLanguageWordMeaning
1EnglishluminousEmitting light; glowing brightly; Brightly...
2Middle Frenchlumineus
3Latinluminosusbright, luminous, full of light
4Latinlūmenlight, source of light
5English-escencea specified process or state
6Latin-escens
7Latin-escoForms verbs from adjectives meaning "become "
8Latin-eoForms stative verbs from adjectives; dative...
9Proto-Italic-ēōForms stative verbs, indicating a state of being;...
10Proto-Italic-ējō
11Proto-Indo-European-éh₁yetiThematicization of the athematic stative verbal...
12Proto-Indo-European-yetiCreates transitive imperfective verbs from roots

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European -yeti
underluminous — Etymology, Origin & Word History | Etymology Explorer