Trinka's Personal Dictionary allows users to customize their writing experience by adding unique terms, such as brand names or technical jargon, that the grammar checker may not recognize. This feature helps eliminate unnecessary spelling alerts and enhances writing fluidity. Users can categorize added words, control case sensitivity, and choose English type preferences. The dictionary syncs in real-time across various platforms, ensuring a seamless experience whether using the Cloud editor, MS Word Add-in, or browser plug-in. With a focus on privacy, the Personal Dictionary is accessible only to the user, maintaining data security.