The abbreviation "tbh" stands for "to be honest." It is often used in casual conversation, especially online or in text messages, to signal that the speaker is being honest or straightforward about their feelings or opinions. People typically use "tbh" to preface a statement that may be candid, blunt, or reveal something personal.
The abbreviation "tbh" emerged in the early 2000s as part of internet slang, particularly within text messaging and social media communications. It reflects a trend toward casual and concise communication in digital formats.