adverb

1. Outside, externally. This is still used in the names of some civil parishes in England, e.g. St Cuthbert Without.

2. Lacking something.

   “Being from a large, poor family, he learned to live without.”

3. In prostitution: without a condom being worn.

preposition

1. Outside of, beyond.

   “The snow was swirling without the cottage, but it was warm within.”

2. Not having, containing, characteristic of, etc.

   “It was a mistake to leave my house without a coat.”

3. Not doing or not having done something.

   “He likes to eat everything without sharing.”

Synonyms: -free, -less, lacking, outwith, sans, w/o

conjunction

1. Unless, except (introducing a clause).