Combining a variety of sounds to form words that can be understood by other individuals, language is one of the defining characteristics of the human species. However, since even highly educated people, great writers, and poets are not consistent regarding the meanings of words, we are unlikely to find consistent rules regarding word meanings by examining human language use. Therefore, deep semantics aims to study of the meanings of individual sounds and their role in creating the meanings of words. Deep Semantics and the Evolution of New Scientific Theories and Discoveries provides innovative insights into the mental processing of word meanings and lack of consistency in human use, while providing examples from different language sources such as, the Quran and Arabic text. This publication presents word roots, the human cognitive system, sound function, and knowledge process, and is designed for linguists, educators, speech professionals, researchers, students, and academics whose interests include topics on the study of people’s imperfect views, feelings, and habits in using words.