The antonyms for the word "un-executed" would be executed, completed, fulfilled, implemented, discharged, performed, realized, and accomplished. These words imply that a certain task or obligation has been fulfilled or carried out effectively. For instance, if a project has been implemented, it means that it has been launched and executed successfully. Similarly, if a plan is accomplished, it means that it has been completed with success. On the contrary, the term "un-executed" refers to something that has not been done, completed, or implemented yet. Hence, it is crucial to understand the opposite meaning of un-executed to express yourself accurately and efficiently.