Abbott-Smith Manual Greek Lexicon
Α, α, ἄλφα (G1)
Α, α, ἄλφα (q.v.), τό , indecl., alpha , the first letter of the Greek alphabet. As a numeral, αʹ = 1, α͵ = 1000. As a prefix, it appears to have at least two and perhaps three distinct senses: ἀ- (before a vowel, ἀν- ) negative , as in ἄ-γνωστος , ἄ-δικος . ἀ- , ἁ- copulative , indicating community and fellowship, as in ἁ-πλοῦς , ἀ-κολουθέω , ἀ-δελφός . An intensive force (LS, s. α ), as in ἀ-τενίζω is sometimes assumed (but v. Boisacq, s.v.).
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain