Spree
late 18th century: of unknown origin.
wiktionary
Unknown. Some theories listed at Douglas Harper (2001–2021), “spree”, in Online Etymology Dictionary.
etymonline
spree (n.)
"a frolic, drinking bout," 1804, slang, earliest use in Scottish dialect works, of uncertain origin. Perhaps [Barnhart] an alteration of French esprit "lively wit" (see esprit). According to Klein, Irish spre seems to be a loan-word from Old Norse sprakr. Watkins proposes a possible origin as an alteration of Scots spreath "cattle raid," from Gaelic sprédh, spré, "cattle; wealth," from Middle Irish preit, preid, "booty," ultimately from Latin praeda "plunder, booty" (see prey (n.)).
The splore is a frolic, a merry meeting. In the slang language of the inhabitants of St Giles's, in London, it is called a spree or a go. [Note in "Select Scottish Songs, Ancient and Modern," vol. II, London, 1810]
In Foote's comedy "The Maid of Bath" (1794) the word appears as a Scottish dialect pronunciation of spry: " 'When I intermarried with Sir Launcelot Coldstream, I was en siek a spree lass as yoursel; and the baronet bordering upon his grand climacteric;' " etc.