4. The device as claimed in claim 1, further comprising first detection means connected to the first memory means and the input means for determining the equivalency of letters between one of the entry words and the first word, the first detection means being further connected to the addressing means and the inflection control means for controlling the operation thereof, and second detection means connected to the inflection control means and the input means for determining the equivalency of letters between the inflected words formed and the first word.
7. The device as claimed in claim 4, wherein the inflection control means comprises: means coupled to the second memory means for storing a particular rule pattern developed from the second memory means; fourth memory means for storing information used to change endings of a word for inflection purposes; second addressing means coupled to the storing means and the fourth memory means for selectively addressing the fourth memory in accordance with the particular rule pattern in the storing means so as to select a type of ending from the fourth memory means; and control means coupled to the fourth memory and the first memory means for inflecting one of the entry words from the first memory means using the ending selected from the fourth memory means.