When referring to being too narrow in focus or expertise, common synonyms for "overspecialized" include "too specialized," "too niche," "too narrow," "too limited," "too specific," "too focused," and "too myopic." These words describe someone or something that has become too narrowly focused, potentially losing sight of the bigger picture or failing to adapt to new situations. While being highly specialized can be beneficial in some contexts, being overspecialized can limit one's ability to learn and grow, and it can decrease one's ability to contribute to broader conversations or projects. Therefore, it's important to strive for balance when it comes to specialization and to keep an open mind to new knowledge and experiences.