Simple past tense and past participle of sponge.(verb)
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Use "sponged" in a sentence
"Now and then she was successful in defying pain; but by some odd revenge of nature, what she learned in such circumstances was afterward wiped as completely from her memory as an old sum is sponged from a slate."
"While taking his customary siesta one afternoon, a wild young fellow -- one of his noble poor relations, who "sponged" at the castle -- happened to pass along a corridor outside of the very hall where his Highness was snoring."
"Mrs Martin was a widow and a washerwoman, and had a ne'er-do-well brother, a fisherman, who frequently "sponged" upon her."