Antonyms for the term "accepted offer" can imply rejection, denial, or refusal by the recipient. The opposite of accepting an offer may be declining or rejecting it or failing to accept it. It may also imply withdrawing an offer or retracting a bid. Other terms that can be used as antonyms for "accepted offer" include canceled, dismissed, or rescinded. These words may indicate that the offer was not taken seriously or that the deal was not finalized. Hence, it is essential to understand the words' nuances and context to make clear the status of the offer.