An electronic language interpreter is operated such that an uninflected word is entered to obtain at least one inflected form of that word. The interpreter comprises three types of memories. The first contains a plurality of words of the uninflected form inclusive in their uninflected word. The second contains a plurality of words in a second language each of which is equivalent to one of the words within the first memory. The third memory contains digital data reflecting a certain number of inflection principles used to inflect the inflected words stored in the first memory. An alphabetical keyboard is provided for entering the uninflected form of the word. An inflection selection keyboard is provided for entering desired inflection information that is used to select data reflecting the appropriate inflection principles stored digitally in the third memory. An inflection enabling circuit is responsive to the selection functions of the inflection selection keyboard for inflecting the uninflected word according to the desired inflection principles derived from the third memory, to obtain the properly inflected word.