with·out 
(wĭth-out, wĭth-)
(wĭth-out, wĭth-)adv.
1. On the outside: a sturdy structure within and without.
2. With something absent or lacking: had to do without.
prep.
1.
a. Not having; lacking: a family without a car.
b. Not accompanied by; in the absence of: volunteered without hesitation; spoke without thinking.
2. At, on, to, or toward the outside or exterior of: standing without the door.
n.
An outer position, place, or area: a threat to security that came from without.
conj.
Regional
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).
[Middle English withoute, from Old English withūtan : with, with; see WITH + ūtan, from without (from ūt, out; see OUT).]