This adjective means 'lifeless' or 'inanimate,' describing objects without a soul or vital principle. Paul uses it in 1 Corinthians 14:7 to contrast musical instruments ('lifeless things,' ἄψυχα) with human speech: even flutes and harps must produce distinct notes to communicate melody, so how much more must tongues-speakers articulate intelligibly! The term emphasizes the paradox that even non-living instruments follow communicative principles—they must be 'interpreted' to be understood. Classical usage includes non-animal food and spiritless persons. Paul's argument is a fortiori: if ἄψυχα instruments require clarity, how much more must Spirit-filled speakers pursue intelligibility in worship.