As "Tehee" is an onomatopoeic term that represents a giggling sound, its antonyms would consist of words that express emotions or actions that are the opposite of laughter. Some antonyms that could be associated with "Tehee" are sadness, crying, grief, mourning, weeping, lament, and tears. These words would indicate a state of mind that is more subdued or serious than the lightheartedness conveyed by a laugh. The use of these antonyms may also depend on the context in which they are presented, as they could have various other related meanings and associations.