Where does “sleepwrite” come from?

sleepwrite (English) comes from English write, from Middle English writen, from Old English wrītan, from Proto-West Germanic wrītan, from Proto-Germanic wrītaną, from Proto-Indo-European wēr-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.

sleepwrite (English): To write in one's sleep

Definitions

  1. To write in one's sleep

Ancestry of “sleepwrite”, step by step

sleepwrite traces back through two separate lines of ancestry.

via English write

StepLanguageWordMeaning
1EnglishwriteTo form letters, words or symbols on a surface in...
2Middle EnglishwritenTo write draw letters on paper to form words; note the following common specialised senses
3Old Englishwrītanto incise, engrave; to scratch, carve, write; to...
4Proto-West Germanicwrītanto scratch, to carve
5Proto-Germanicwrītanąto scratch, carve; to engrave, inscribe, write
6Proto-Indo-Europeanwēr-true
7Proto-Indo-Europeanwer-to burn; to cover, heed, notice; squirrel

via English sleep

StepLanguageWordMeaning
1EnglishsleepTo rest in a state of reduced consciousness; To...
2Middle Englishslepento sleep; to become asleep, to cause to sleep; to...
3Old Englishslǣpan
4Proto-West Germanicslāpanto sleep
5Proto-Germanicslēpanąto sleep
6Proto-Indo-Europeanslab-to be weak, be languid; be weak, limp, languid
Every word from Proto-Indo-European wer-Every word from Proto-Indo-European wēr-Every word from Proto-Germanic wrītaną