The rejection of an offer to enter into a contract that simultaneously makes a different offer, changing the terms of the original offer in some way. For example, if a buyer offers $5000 for a used car, and the seller replies that he wants $5500, the seller has rejected the buyer's offer of $5000 and has made a counteroffer to sell at $5500. The le... Found on http://www.nolo.com/dictionary/counteroffer-term.html