The German word for ‘tall’ is groß. This word is used to describe someone or something that has a considerable height. For example, you might say, Er ist ein großer Mann, which translates to ‘He is a tall man.’
Understanding the pronunciation is also important. The word groß is pronounced as [ɡʁoːs]. The ‘g’ is pronounced like the ‘g’ in ‘go,’ the ‘r’ is a guttural sound typical in German, and the ‘ß’ (called ‘Eszett’ or ‘sharp s’) is pronounced like a double ‘s.’
In summary, if you want to say ‘tall’ in German, you use the word groß, and it is pronounced as [ɡʁoːs].