Where does “drowseth” come from?

drowseth (English) comes from English drowse, from Middle English drousen, from Old English drūsan, from Proto-Germanic drūsijaną — to look down; mourn.

Ancestry of “drowseth”, step by step

drowseth traces back through two separate lines of ancestry.

via English drowse

StepLanguageWordMeaning
1EnglishdrowseTo be sleepy and inactive; To nod off; to fall...
2Middle Englishdrousen
3Old Englishdrūsan
4Proto-Germanicdrūsijanąto look down; mourn

via English eth

StepLanguageWordMeaning
1EnglishethA letter introduced into Old English to...
Every word from Proto-Germanic drūsijanąEvery word from Old English drūsanEvery word from Middle English drousen