Simple past tense and past participle of grubstake.(verb)
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Use "grubstaked" in a sentence
"After the laundry my sister and her husband grubstaked me into the"
"Half an hour later he was conferring with Jones, the erstwhile elevator boy and rabid proletarian whom Daylight long before had grubstaked to literature for a year."
"Forrest had lost everything in a series of calamities, so that San Francisco debated what price his Nob Hill palace would fetch at auction, he grubstaked one, Del"