Twitter is a simple social network in which users send messages, also known as "tweets". The tweets contain lots of information regarding people behaviour, their daily activities and opinion about current affairs. The maximum size of a tweet is 140 characters. People mostly use short language in tweets. For example, "where are you?" is written as "whr r u?". These tweets are ambiguous and are not useful from the perspective of tweet analysis. It is required to clean original tweets, i.e. get dictionary words for short words.