A display apparatus which is capable of recognizing a voice and a method thereof are provided. The method includes receiving an uttered voice of a user, extracting a plurality of similar words which are similar to the uttered voice by extracting voice information from the uttered voice and measuring reliability of a plurality of words based on the extracted voice information, setting a word satisfying a predetermined condition from among the plurality of extracted similar words as a target word with respect to the uttered voice, and displaying at least one of the target word and a similar word list including similar words other than the target word. In this manner, a display apparatus may improve a recognition rate on an uttered voice of a user without changing an internal component related to voice recognition, such as, an acoustic model, a pronunciation dictionary, or the like.