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I watched a clip a show shown on TruTV about a woman who was angry about not having been offered free cash for thirty days. According to the receptionist in the financial services place she was in, the sign she (the disgruntled customer) read meant that one can receive a loan free of interest within a 30-day span. However, the sign reads:
Bring a Friend to
American Jewelry and Loan
Get 30 days of interest free cash!
Notice the final line. There's no hyphen between "interest" and "free," so isn't the customer's misunderstanding valid? I'm assume that "interest" has to modify "free" in order to conjoin the words.
So, to remind you: When describing a loan that's free of interest (0% interest), is it "interest-free" or "interest free?" I'm assuming it's the former.
For the record, I have googled this, and I came up with mixed results. Some sites use "interest free" and others use "interest-free."