Where does “sour” come from?

sour (Middle English) comes from Old French essorer, from Vulgar Latin exaurare, from Latin ex, from Latin commūnicō, from Latin commūnis, from Old Latin com(m)oinis, from Proto-Italic kommoinis, from Proto-Indo-European ḱom-moy-ni- — to bend; curve; arch; vault; to bow, bend, arch,...

sour (Middle English): sour, acidic, bitter; foul-smelling, rancid;...

Definitions

  1. sour, acidic, bitter; foul-smelling, rancid;...

Ancestry of “sour”, step by step

sour traces back through two separate lines of ancestry.

via Old French essorer

StepLanguageWordMeaning
1Old Frenchessorerto fly up, soar
2Vulgar Latinexaurareto rise into the air; to expose to air; to rise...
3LatinexA name of the letter "X"; out of, from
4Latincommūnicōto impart, share
5Latincommūniscommon, commonplace, ordinary, general, universal, shared, shared alike, of both sides, belonging to two or more together
6Old Latincom(m)oinis
7Proto-Italickommoiniscommon
8Proto-Indo-Europeanḱom-moy-ni-held in common
9Proto-Indo-Europeanḱómbeside, near, by, with
10Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
11Middle Englishkyt
12Germankittputty certain kinds of cement used for fixing e.g. window panes
13Old High Germankuti
14Proto-West Germanickwidugum, resin
15Proto-Germanickweduzresin
16Proto-Indo-Europeangʷet-resin, gum; to say, speak
17Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via Old English sūr

StepLanguageWordMeaning
1Old Englishsūrsour
2Proto-West Germanicsūrsour, acidic
3Proto-Germanicsūrazsour, acidic
4Proto-Indo-EuropeansuHróssour, salty, bitter

Words derived from “sour

Every word from Proto-Indo-European gū-Every word from Proto-Indo-European gʷet-Every word from Proto-Germanic kweduz