A voice recognition device includes a memory that stores dictionary data in which likelihoods that each of registered words precedes other registered words are stored, and digital voice data corresponding to a voice signal input through a microphone, and a processor configured to perform voice recognition and acquire a first character string corresponding to the digital voice data, when a first letter of the first character string is a vowel letter, generate a plurality of first words that precede a second word in the first character string according to the dictionary data, each of the first words having a different first letter, and select one of the first words based on the likelihoods and output the second character string that is a combination of the selected first word and the second word.