Usage: 7 forms in 57 verses
Liddell-Scott-Jones
ἐνιαύσιος (eniausios) of a year G:A
ἐνιαύσιος-αύσιος, α, ον,
[Refs 5th c.BC+]; also ος, ον [Refs 5th c.BC+]: (ἐνιαυτός):— of a year, one year old, σῦς [Refs 8th c.BC+]
__II annual, [Refs 8th c.BC+]: neuter plural as adverb, [Refs 8th c.BC+] adverb -ίως[Refs 4th c.BC+]
__III lasting a year, [Refs 5th c.BC+]; ἐ. φυγή a year's exile, [Refs 5th c.BC+]; ὁδός X.[same place]; κἀνιαύσιος βεβώς gone, absent for a year, [Refs 5th c.BC+]