ἀκαιρέομαι G170
akairéomai · ak-ahee-reh'-om-ahee · Verb
from a compound of Α (as a negative particle) and καιρός (meaning unseasonable); to be inopportune (for oneself), i.e. to fail of a proper occasion:--lack opportunity.
1 Occurrence in the King James Bible
Philippians 4:10But I rejoiced in the Lord greatly, that now at the last your care of me hath flourished again; wherein ye were also careful, but ye lacked opportunity.