Thinking about it, I like that the Mastodon equivalent for retweets is called "boosts" instead. Unlike "retweet" or "reblog", which centres your action in placing other people's stuff on your timeline, the action is more about increasing the range of the original toot (or jinx or awoo or w/e). The focus, I think, is more on them.

Besides, there are different words for "toot" on different instances, not to mention "retoot" being awkward as hell to say.