Where does “daydream” come from?

Daydream combines English day with dream, where day derives from Middle English day, Old English dæġ, Proto-West Germanic dag, and Proto-Germanic draumaz, ultimately from Proto-Indo-European dʰegʷʰ- meaning to burn or shine.

daydream (English): A spontaneous and fanciful series of thoughts...

Definitions

  1. A spontaneous and fanciful series of thoughts...

Ancestry of “daydream”, step by step

daydream traces back through two separate lines of ancestry.

via English dream

StepLanguageWordMeaning
1EnglishdreamImaginary events seen in the mind while sleeping;...
2Middle Englishdremmusic; voice, conversing; joy, mirthfulness
3Old Frisiandrēma
4Proto-West Germanic*draumijanto dream
5Proto-Germanicdraumijanąto dream
6Proto-Germanicdraumazdream
7Proto-Germanicdraugmaz
8Proto-Indo-Europeandʰrowgʰ-mos
9Proto-Indo-Europeandʰrewgʰ-to deceive, to mislead; to serve one's tribe;...
10Proto-Indo-Europeandʰer-to support; to hold

via English Day

StepLanguageWordMeaning
1EnglishDayderived from a medieval diminutive of David
2Middle Englishdayday; daylight, sunlight; epoch, age, period
3Old Englishdæġday, daytime
4Proto-West Germanicdagday
5Proto-Germanicdagazday; name of the D-rune
6Proto-Indo-Europeandʰegʷʰ-to burn; warm, hot

Words derived from “daydream

Every word from Proto-Indo-European dʰer-Every word from Proto-Indo-European dʰrewgʰ-Every word from Proto-Indo-European dʰrowgʰ-mos