The term COMMANDMENTS WORD is composed of two words, NOT and SHALT. NOT is a three-letter word meaning 'to refuse to do something' or 'to deny the truth of something'. SHALT is a five-letter word meaning 'MUST' or 'SHALL'. Together, these two words form the phrase 'Thou Shalt Not', which is a commandment found in the Bible. This phrase is used to express the idea that certain actions are forbidden by God.