What is without? What is without? Regional Unless: "You don't know about me without you have read a book by the name of The Adventures of Tom Sawyer” ( Mark Twain). On the outside: a sturdy structure within and without. With something absent or lacking: had to do without. Not having; lacking: a family without a car. Not accompanied by; in the absence of: volunteered without hesitation; spoke without thinking. At, on, to, or toward the outside or exterior of: standing without the door. An outer position, place, or area: a threat to security that came from without.