Strong's #817: ater (pronounced at'-er)
a particle probably akin to 427; aloof, i.e. apart from (literally or figuratively):--in the absence of, without.
Thayer's Greek Lexicon:
̓́
ater
1) without, apart from
Part of Speech: preposition
Relation: a particle probably akin to G427
Usage:
This word is used 2 times:
Luke 22:6: "to betray him unto them in the absence of the multitude."
Luke 22:35: "When I sent you without purse, and scrip, and"