Spend

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Old English spendan, from Latin expendere ‘pay out’; partly also a shortening of obsolete dispend, from Latin dispendere ‘pay out’.

wiktionary

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From Middle English spenden, from Old English spendan (attested especially in compounds āspendan(“to spend”), forspendan(“to use up, consume”)), from Proto-West Germanic *spendōn(“to spend”), borrowed from Latin expendere(“to weigh out”). Doublet of expend. Cognate with Old High German spentōn(“to consume, use, spend”) (whence German spenden(“to donate, provide”)), Middle Dutch spenden(“to spend, dedicate”), Old Icelandic spenna(“to spend”).

etymonline

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spend (v.)

"to pay out or away" (money or wealth), Old English -spendan (in forspendan "use up"), from Medieval Latin spendere, a shortening of Latin expendere "to weigh out money, pay down" (see expend) or possibly of dispendere "to pay out." A general Germanic borrowing (Old High German spendon, German and Middle Dutch spenden, Old Norse spenna). In reference to labor, thoughts, time, etc., attested from c. 1300. Intransitive sense "exhaust, wear (oneself) out" is from 1590s (see spent).