[swift-evolution] [SE-0011] Re-considering the replacement keyword for "typealias"

[Tino Heth]

> The main reason to use `associated` is because the feature is called an "associated type". If we're willing to rename the feature to "placeholder type", then `placeholder` would be a good keyword.
good point - maybe it's because I'm no native speaker, but for me "associated type" is just a technical term with no obvious meaning.