Uncurtain, meaning to reveal or disclose, has several synonyms that can be used interchangeably. The word 'unveil' can be used as a synonym, usually in reference to the revealing of an object. 'Unwrap' is also a commonly used synonym for the revealing of presents or gifts. 'Uncover' is yet another synonym for uncurtain which can be used in cases where something previously hidden or obscure is now being revealed. 'Exhibit' can also be used as a synonym when referring to the presentation of something previously hidden in a public setting. Finally, 'disclose' and 'unmask' are other synonyms that can be used in similar contexts for revealing something previously hidden.