Corkers is a term that means something is exceptional or outstanding, but there are several synonyms that can be used in its place. One synonym is "gem," which suggests something of great worth or excellence. Another synonym is "knockout," which implies a stunning or impressive performance. "Whopper" is another synonym that indicates something big or impressive, while "showstopper" suggests a performance that halts everything else because of its quality. "Stunner" is also a synonym for "corkers" since it suggests something that causes a shock or amazement. Overall, there are many synonyms to use in place of "corkers," and each one adds a unique shade of meaning to the description of something outstanding.