Where does “писа́ть” come from?

писа́ть (Russian) comes from German pissen, from Middle Low German pissen, from Dutch pissen, from Middle Dutch pissen, from Old French pissier, from Vulgar Latin pissiare, from Latin pissio — I piss.

писа́ть (Russian): to write

Definitions

to write

Ancestry of “писа́ть”, step by step

писа́ть traces back through 3 separate lines of ancestry.

via German pissen

Step	Language	Word	Meaning
1	German	pissen	to piss; to piss down
2	Middle Low German	pissen	—
3	Dutch	pissen	to piss
4	Middle Dutch	pissen	to piss
5	Old French	pissier	to piss; to excrete urine
6	Vulgar Latin	pissiare	present active infinitive of *pīssiō
7	Latin	pissio	I piss

via Old East Slavic писати

Step	Language	Word	Meaning
1	Old East Slavic	писати	to write; to paint
2	Proto-Slavic	pьsati	to draw, depict; to write
3	Proto-Balto-Slavic	peiś-	—
4	Proto-Indo-European	peyḱ-	to hew, cut out; to stitch, embroider, sting; to...

via Old Church Slavonic писати

Step	Language	Word	Meaning
1	Old Church Slavonic	писати	to write
2	Proto-Slavic	pisati	to write

Words derived from “писа́ть”

Every word from Latin pissio →Every word from Vulgar Latin pissiare →Every word from Old French pissier →