Sod
late Middle English: from Middle Dutch, Middle Low German sode, of unknown ultimate origin.
wiktionary
From Middle English sod, sodde[attested since mid-15th c.], from Middle Dutch zoden(“turf”) or Middle Low German sôde, soede(“turf”), both related to Dutch zode(“turf”), German Sode(“turf”), Old Frisian sātha(“sod”), all being of uncertain ultimate origin.
From sodomite or sodomize, by shortening.
From the Old English plural past tense, or a back-formation from the past participle sodden.
sod (plural sods)
etymonline
sod (n.1)
"turf, slice of earth with grass on it," mid-15c., apparently from Middle Dutch sode "turf," or Middle Low German sode, both related to Old Frisian satha "sod," all of uncertain origin. Perhaps the notion is water saturation and the group is related to sog. The (old) sod "Ireland" is from 1812.
sod (n.2)
term of abuse, 1818, short for sodomite (also see sodomy). British colloquial sod-all "nothing" is attested from 1958.
sod (v.1)
c. 1400, "to cover with sod," from sod (n.). Related: Sodded; sodding.
sod (v.2)
in sod off (1960), British slang term of dismissal; see sod (n.2).
