Able to be refunded or swapped in case of customer dissatisfaction, loss, breakage etc.(adjective)
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Use "refundable" in a sentence
"Stall-holders have been known to share some stalls with other groups due to extortionate Eisteddfod rates, but if this is the case here, how come it's refundable from the taxpayer?"
"A tax credit reduces any tax you owe dollar for dollar, and some credits are even "refundable"--meaning you can get money back even if you didn't pay any taxes."
"That's why the industry has been asking for Congress to make the PTC "refundable" -- payable even to firms without any tax liability."