To enable a user to retrieve a fixed phrase or sentence including a plurality of his desired words by performing a simple operation that does not take time.The user uses an operating part 31 to direct designate a plurality of respective words in one sentence or more displayed on a display part 32 on a screen regardless of the continuous arrangement or discontinuous arrangement of the sentences. Then, a recognizing part 34 recognizes a plurality of words designated by the user on the basis of operation contents of the operating part 31 and notifies a retrieving part 35 of the recognition result. The retrieving part 35 retrieves a fixed phrase and an example including the plurality of notified words or text about them from a dictionary storing part 36 and supplies the fixed phase or the example or the text to a display control part 33. The display control part 33 displays the supplied fixed phrase and example or text about them on the display part 32. This invention is applicable to an information processor having a dictionary function.