The etymology of "galoot" is interesting.
- some places just say "of obscure origin" and cite first use as "circa 1818" e.g. https://www.merriam-webster.com/dictionary/galoot
- however, "This word is used in both the US and Scotland, and its origin is uncertain, although it most likely began as nautical slang for "green" or new sailors, especially if they were marines or soldiers." https://www.vocabulary.com/dictionary/galoot#0
- OED is behind a paywall, but we can glean "Early 19th century (originally in nautical use meaning 'an inexperienced marine'): Of unknown origin.” and "OED's earliest evidence for galoot is from 1808, in the writing of 'A Naval Officer'. " https://www.oed.com/dictionary/galoot_n?tab=etymology
- more specifically, ""Dictionary of American Slang" proposes galut, Sierra Leone creole form of Spanish galeoto "galley slave."" https://www.etymonline.com/word/galoot
- a dissenting opinion is from wiktionary, which suggests "From Quranic Arabic جالُوت (jālūt, pronounced galūt in Egyptian Arabic), proper name equivalent to English Goliath, giant warrior of the ancient Philistine ethnicity; cf. connotations of derogatory uses of English Philistine. Doublet of goliath." https://en.wiktionary.org/wiki/galoot
E-Tru is kind of a galoot himself, come to think of it.