The present disclosure generally relates to dynamic phrase expansion for language input. In one example process, a user input comprising text of a first symbolic system is received. The process determines, based on the text, a plurality of sets of one or more candidate words of a second symbolic system. The process determines, based on at least a portion of the plurality of sets of one or more candidate words, a plurality of expanded candidate phrases. Each expanded candidate phrase comprises at least one word of a respective set of one or more candidate words of the plurality of sets of one or more candidate words and one or more predicted words based on the at least one word of the respective set of one or more candidate words. One or more expanded candidate phrases of the plurality of expanded candidate phrases are displayed for user selection.