Strong's #1622: ektos (pronounced ek-tos')
 from 1537; the exterior; figuratively (as a preposition) aside from, besides:--but, except(-ed), other than, out of, outside, unless, without.
Thayer's Greek Lexicon:
 ̓́ 
 
  ektos 
 
 1) outside, beyond
 2) the outside, exterior
 3) outside of
 4) beyond, besides, except
 
  Part of Speech: adverb
Relation: from G1537
 
Usage:
This word is used 9 times:
Matthew 23:26: "platter, that the  outside of them may be clean also."
Acts 26:22: "great, saying none  other things than those which the prophets"
1 Corinthians 6:18: "a man doeth is  without the body; but"
1 Corinthians 14:5: "than he that speaketh, with tongues,  except he interpret, that the"
1 Corinthians 15:2: "I preached unto you,  unless ye have believed in vain."
1 Corinthians 15:27: "all things are put under him, it is manifest that  he is excepted, which did put all things under him."
2 Corinthians 12:2: "the body, I cannot tell; or whether  out of the body, I cannot tell:"
2 Corinthians 12:3: "in the body, or  out of the body, I cannot tell:"
1 Timothy 5:19: "receive not an accusation,  but before two or"