Based on the British National Corpus(BNC),this paper makes an analysis of the word absolutely and thoroughly from their collocation.Therefore,the results can be listed as following.Firstly,the obvious adjective collocates of absolutely mainly are positive words while the obvious adjective collocates of thoroughly mainly are negative words.Secondly,the obvious verb collocates of absolutely mainly are negative words while the obvious verb collocates of thoroughly mainly are neutral words and negative words.This paper aims to make a comprehensive analysis of the synonyms,thus,contributing to foreign language learning and teaching for Chinese learners.