A "win streak" is an impressive achievement that shows consistency in performance, but there are several synonyms that can be used to describe this type of success. One alternative phrase is a "victory run," which suggests that a team or individual has been on a winning streak for an extended period with no signs of stopping. Another possible synonym for a win streak is a "dominance streak" because it implies that a player or team has been dominating their opponents and winning matches easily. Lastly, a "success series" can also be used to describe a string of wins and can be used to show that an individual or team is on a roll.