Uses of Alpha Prefix in Greek

 1. Alpha may be used privatively. An example is ἄτομος, which one can translate as "indivisible," "undivided" or "uncut." See 1 Corinthians 15:52 where the word refers to "the smallest conceivable instant" (David Garland).

2. Next, the letter alpha is employed copulatively as in ἀδελφός ("brother"). See Matthew 5:23; 10:2.

3. Writers sometimes use alpha intensively as in ἀτενής. See https://lsj.gr/wiki/%E1%BC%80%CF%84%CE%B5%CE%BD%CE%AE%CF%82

Sources: Liddell, Scott, and Jones Greek-English Lexicon.

Garland, David E. 1 Corinthians. Grand Rapids, MI: Baker Academic, 2003. Print.

Thiselton, Anthony C. The First Epistle to the Corinthians: A Commentary on the Greek Text. Grand Rapids, MI: W.B. Eerdmans, 2000. Print.

Robertson, A T . A Grammar of the Greek New Testament in the Light of Historical Research. Hodder & Stoughton, George H. Doran, 1919.