I've mastered about a dozen and can read another dozen or so. I have the same problem you're describing, but it tends to be with languages I haven't used in a

I've mastered about a dozen and can read another dozen or so. I have the same problem you're describing, but it tends to be with languages I haven't used in a while. I've also resigned myself to be ok with googling a lot of things: "list comprehension python" "typescript generic constraint" "golang package visibility" Once I got ok with this approach, I became a much happier and productive developer. Rather than beating myself up that I couldn't remember the details, I just "outsourced" said details to Google/StackOverflow and focused on the big picture. As long as I grok the semantics, I haven't missed remembering all the syntax and idioms of each and every language.