Where does “baby blues” come from?

baby blues (English) comes from English baby, from Middle English baby, from Middle English -y, from Old English -iġ, from Proto-West Germanic -g, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

baby blues (English): Blue eyes; Period and feeling of depressiveness...

Definitions

  1. Blue eyes; Period and feeling of depressiveness...

Ancestry of “baby blues”, step by step

baby blues traces back through 3 separate lines of ancestry.

via English baby

StepLanguageWordMeaning
1EnglishbabyA very young human, particularly from birth to a...
2Middle EnglishbabyA child or baby
3Middle English-yDesignates an adjective, in many cases formed by...
4Old English-iġ-y, -ic
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic

via English blues

StepLanguageWordMeaning
1Englishbluesplural of blue; A feeling of sadness or...
2Latinvenetusof or pertaining to the Veneti; Venetian; blue,...
3LatinVenetiVeneti (a Celtic tribe of Armorica in antiquity)

via English baby blue eyes

StepLanguageWordMeaning
1Englishbaby blue eyesAny of various flowering plants in the genus...
Every word from Proto-Indo-European -ḱosEvery word from Old English -iġEvery word from Middle English -y
baby blues — Etymology, Origin & Word History | Etymology Explorer