This paper proposes an automatic method to estimate the impression of noun-verb phrases. The impression is important in making smoother communication and so on since it gives away the speaker's intention and emotion. In fact, many related researches have been conducted. However, the conventional techniques were mainly focused on nouns and verbs were comparatively neglected. Verbs can make a big change to the whole impression when they appear with nouns. This paper proposes a new method to estimate the impression of noun-verb phrases. The proposed method introduces two types of estimation values, polarity accordance and adequacy accordance. These values are calculated by extracting 11 kinds of phrase patterns from Web Japanese n-gram. Through the experimental results, we show the novelty of our method as an impression estimating system.