感谢 (gǎn xiè) is a verb meaning 'to thank' or 'to express gratitude'. It combines two characters: 感 (gǎn), meaning 'to feel' or 'to sense', and 谢 (xiè), meaning 'to decline' or 'to decline with respect' — historically linked to modestly refusing a favor, which evolved into expressing sincere appreciation. Together, they convey the idea of deeply feeling and acknowledging kindness or help from others.

This word is formal and respectful, commonly used in spoken and written Chinese across many contexts — from thanking a friend for small favors to expressing deep appreciation in speeches or letters. Unlike the more casual 谢谢 (xiè xie), 感谢 often appears with an object (e.g., 感谢你/他/大家) and is frequently followed by a clause explaining what is being thanked for (e.g., 感谢你的帮助). It carries warmth and sincerity without sounding overly stiff, making it appropriate for both personal and professional communication.