Mercury in Capricorn meaning
Mercury in Capricorn thinks like a builder. Your mind is organized, realistic, and aimed at results, sorting ideas by whether they will actually hold weight. You are patient with long problems and comfortable with the discipline that solving them takes.
You communicate with economy and authority, saying what needs saying and trusting your competence to speak for the rest. Humor here tends to run dry and deadpan. The caution is rigidity: the practical mind can dismiss an idea too soon simply because it looks impractical today.
You learn steadily and with purpose, usually because the knowledge leads somewhere you want to go. Give this Mercury a goal and a timeline and it will map the route, then walk it, one sensible step at a time.