ἄκαρπος

unfruitful, barren

Definition

The adjective ἄκαρπος literally means 'without fruit' or 'unfruitful.' In the New Testament, it describes things that fail to produce the expected or desired result. In agricultural parables, it refers to soil that yields no crop (Matthew 13:22, Mark 4:19). In ethical and spiritual contexts, it describes actions that are worthless or unprofitable (Ephesians 5:11), a life lacking in Christian virtues (2 Peter 1:8), or even prayer that is ineffective due to a lack of understanding (1 Corinthians 14:14). Thus, it encompasses both literal barrenness and metaphorical unproductiveness in one's faith and conduct.

Biblical Usage

ἄκαρπος is used in diverse contexts across the Gospels, Epistles, and Jude. In the Synoptic Gospels, it appears in the Parable of the Sower to describe thorn-choked soil that bears no grain. Paul uses it to characterize worthless 'deeds of darkness' (Ephesians 5:11) and prayer spoken without understanding (1 Corinthians 14:14). The pastoral epistles and general epistles apply it to a life lacking in good works (Titus 3:14) or spiritual growth (2 Peter 1:8), while Jude 1:12 uses it metaphorically for false teachers who are spiritually barren.

Etymology

Derived from the alpha-privative prefix ἀ- (a-), meaning 'not' or 'without,' combined with καρπός (karpos, G2590), meaning 'fruit.' It is a straightforward compound meaning 'fruitless.' The root καρπός is central, extending from literal agricultural produce to metaphorical outcomes, results, or profits.

Semantic Range

This word is theologically significant as it contrasts with the biblical ideal of fruitfulness, a key metaphor for spiritual vitality and obedience. Being 'unfruitful' represents a failure to live out the transformative results of faith, whether through distraction (as in the parable), sinful actions, or a lack of spiritual growth. It underscores that genuine faith and connection to God (or Christ as the vine) must produce tangible, good results in character and action. Understanding this Greek term enriches reading by highlighting the serious spiritual consequences of a barren life across different biblical contexts.

In an agrarian society, the image of unfruitful land would have been immediately understood as a sign of failure, waste, and poverty. A barren tree or field was economically disastrous. This cultural backdrop gives the metaphor its potency when applied to spiritual life—spiritual barrenness is portrayed as equally catastrophic and unproductive.

στεῖρος (steiros, G4723) — Specifically denotes biological barrenness or infertility, used literally (e.g., of Elizabeth in Luke 1:7). ἄκαρπος is broader, covering both literal and metaphorical unfruitfulness.

Word Details

Scripture References