Grimm's Law is a linguistic term that refers to a set of sound changes that occurred in the Germanic languages. This law was first formulated by Jacob Grimm, a German linguist, in 1822. The law describes a series of shifts in the pronunciation of consonants that were common among the Germanic languages, including English, German, and Dutch. Some synonyms for Grimm's Law include the Germanic sound shift, the first Germanic sound shift, or simply the consonant shift. Students of linguistics and language history will often refer to Grimm's Law as the first major breakthrough in the study of how languages evolve over time.
