What does an offeree use to simply indicate that she is not interested in an offer?

An offeree can use a counteroffer or simply express their disinterest verbally or in writing to indicate that they are not interested in an offer. By making a counteroffer, the offeree proposes different terms, effectively rejecting the original offer. Alternatively, a straightforward statement, such as "I am not interested," can also clearly communicate their lack of acceptance.