The Greek noun akrasia (ἀκρασία) denotes lack of self-control, intemperance, or incontinence — the inability to restrain one's passions and desires. It is the opposite of enkrateia (self-control), a fruit of the Spirit.
Jesus uses akrasia in Matthew 23:25 to condemn the Pharisees — outwardly clean but inwardly full of self-indulgence. Paul warns that marital abstinence can create vulnerability to akrasia (1 Corinthians 7:5). Self-control is a mark of the Spirit-filled life (Galatians 5:23). The renewal of the mind (Ephesians 4:22–23) is the path from unrestrained passion to Spirit-governed desire.