The word "re-start" refers to beginning again or resuming an activity that had halted. Antonyms for "re-start" could be words like "end," "terminate," "finish," or "conclude." These words indicate that the activity or process has come to an end and will not continue. Other antonyms could be "cancel," "abandon," "halt," or "cease," all of which suggest an intentional decision to stop the activity, rather than a temporary pause. In contrast, "re-start" implies a desire to continue and pick up where one left off, while its antonyms suggest a permanent or deliberate end to the activity.