IntroductionSemantic change involves a change in the meaning of words, however this change does not happen overnight or suddenly. On the contrary, this is a slow process in the evolution of language and these differences are realized only as time passes. There are many reasons to transform and change the meaning of a word. They can be adopted through the insertion of words from another language, through borrowing or even through the popular use of a word within another context, resulting in the differentiation of English throughout the country where it is spoken English. Historical linguistics deals with the process of semantic change over the years, explaining its alternation. This branch of linguistics deals with a phenomenon with scientific value in order to explain certain processes and assign names to it, such as improvement, worsening, broadening, semantic narrowing, whitening, metaphor and metonymy (Nordquist, 2010). This essay will not explain each of these processes in depth because this is not interesting for the purpose of this work. Instead, some words will be presented and the reasons why they changed will be discussed, as well as how this semantic change occurred in these words, leading the reader to understand some semantic changes that have occurred in English history. Words and their transformations"Semantic change is not a change in meaning per se, but the addition of a meaning to the semantic system or the loss of a meaning from the semantic system while the form remains constant." (Planck, 1991: 8). Some words lose their original meaning to become something with an inferior or pejorative meaning. Indeed, there is an explanation for the worsening, which according to Henning (1995), on his website, “is the process… middle of paper… roads cannot be set aside because it is a trend in its semantic change. Therefore, semantic changes cannot be confused with slang. This is the so-called "sublanguage", "folk language" or even "slang". Slangs are words that have nothing to do with the sentence. It is a linguistic variation and the same word has another meaning, unlike semantic changes. Slang or linguistic variation is shared by a restricted group (age or profession) which is used to exclude other people who do not belong to the original group from communication, thereby strengthening an emotional identity. Given these facts, when we study language as a phenomenon characterized by dynamism, it is possible to demonstrate that all the elements that belonged to it (words, order of sentences, phonemes, among others) have undergone changes due to its evolution. A representative case of this type of change is semantic change.