When it comes to finding the right words to describe a laid-back and unassuming personality, lowkeyed is a great word to use. However, if you're looking for some synonyms to mix things up, there are plenty of options to choose from. Some similar words include understated, subtle, mellow, relaxed, unpretentious, modest, and discreet. Each one of these words can be used to describe someone who isn't showy or flamboyant but still has a strong presence and personality. So if you're ready to expand your vocabulary and add some variety to your descriptions, try swapping out lowkeyed for one of these synonyms.