Where does “self-serious” come from?

self-serious (English) comes from English serious, from Middle English seryows, from Old French serieux, from Medieval Latin seriosus, from Latin sērius, from Latin sērus, from Proto-Italic swerjos, from Proto-Indo-European swer-yo-s — to ache; to fester; wound; injury.

self-serious (English): Taking oneself too seriously, pretentiously and humorlessly convinced of one's own seriousness

Definitions

  1. Taking oneself too seriously, pretentiously and humorlessly convinced of one's own seriousness

Ancestry of “self-serious”, step by step

self-serious traces back through two separate lines of ancestry.

via English serious

StepLanguageWordMeaning
1EnglishseriousWithout humor or expression of happiness; grave...
2Middle Englishseryows
3Old Frenchserieux
4Medieval Latinseriosusserious
5Latinsēriusgrave; earnest; serious
6Latinsēruslate, too late
7Proto-Italicswerjos
8Proto-Indo-Europeanswer-yo-s
9Proto-Indo-Europeanswer-to ache; to fester; wound; injury

via English Self

StepLanguageWordMeaning
1EnglishSelfHimself, herself, itself, themself, themselves; that specific (person mentioned)
2Middle EnglishsalveAlternative form of sauf
3Old Englishsealfsalve
4Proto-West Germanicsalbusalve, ointment
5Proto-Germanicsalbōsalve, ointment
6Proto-Indo-Europeansolp-éh₂
7Proto-Indo-Europeanselp-fat, oil
Every word from Proto-Indo-European swer-