Squander

google

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late 16th century: of unknown origin.

wiktionary

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Earliest uses (late 16th c.) "to spend recklessly or prodigiously", also "to scatter over a wide area". Of unknown origin. Perhaps a blend of scatter +‎ wander.

Compare Danish skvætte(rare)/ skvatte(“to splash”) (nominalised: skvæt), Icelandic skvetta(“to squirt”), Swedish skvätta(“to splash”), Norwegian Bokmål skvette. [1]

etymonline

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squander (v.)

1580s (implied in squandering), "to spend recklessly or prodigiously," of unknown origin; Shakespeare used it in "Merchant of Venice" (1593) with a sense of "to be scattered over a wide area." Squander-bug, a British symbol of reckless extravagance and waste during war-time shortages, represented as a devilish insect, was introduced 1943. In U.S., Louis Ludlow coined squanderlust (1935) for the tendency of government bureaucracies to spend much money.