Etymology is a branch of linguistics which focuses on word origins and the evolution of languages as they are used. Every word in a language has a complex history, and etymology aims to understand that history so that the word can be better understood. In addition, looking at the etymology of words within a language helps linguists understand the language as a whole, along with other languages in the same language family.
The term “etymology” first entered the English language in 1398, and it is a compound of two Greek words, etymon, referring to the true sense of something, and logos, or “word.” Early students of etymology became intrigued about the words which were widely in use, and where they came from, so they started to look at the roots and history of their language. In some instances, unfortunately, students of words came up with folk etymologies for words, which are entertaining, but untrue. Since folk etymology for some words is very widespread, the true roots of the words are sometimes obfuscated.
New words enter a language in a number of ways. One of the most common is borrowing. English, for example, is a language which is well known for borrowing words from other languages. Indeed, a large portion of the English language includes borrowed words like doppleganger, smorgasboard, pundit, aardvark, and amok. Often, the pronunciation and meaning of a word undergo changes when it is borrowed, and the original users may not recognize it after several decades of adoption.
Another common source of new words is word formation. Word formation involves creating entirely new words, often compounding existing words in the language, or by changing the meaning of an established word. In eras of accelerated scientific and technical development, a plethora of new words and meanings like Internet, router, and robot emerge. New words can also be created through compounding, adding prefixes or suffixes to existing words to change their meaning, as is the case with words such as glorify, educational, rhapsodize, and the popular 2006 word, truthiness. In some cases, a new word forms from sound symbolism, also called onomatopoeia. Common examples of onomatopoeia are words such as meow, honk, buzz, and clank, which illustrate their meaning with the sound that they make.
The study of language is important, because it reveals a great deal about the culture in which the language is spoken. By figuring out whether words were newly formed or borrowed, for example, linguists can determine when various cultures had contact which each other. As the meaning of words undergoes subtle transitions, etymology can also illustrate social and political trends. For many students of etymology, it is also simply interesting.