The term 'Involve by Necessity' can be summarized by the crossword solution 'ENTAIL'. This term is used to describe a situation in which something is necessarily connected or implied by another. It is often used to describe a situation in which one action or event leads to another, and the second action or event is an unavoidable consequence of the first. For example, if someone commits a crime, they may be involved by necessity in the legal proceedings that follow.