This noun means hindrance, obstacle, or impediment—something that blocks progress or creates difficulty. Paul uses it in 1 Corinthians 9:12 when explaining why he refuses financial support: 'lest we hinder the gospel of Christ.' The term can refer to physical obstacles or metaphorical barriers. Classical Greek used it for incisions, interruptions, or material obstacles. Paul's concern is pastoral—he'll surrender legitimate rights rather than create any hindrance that might impede the gospel's advance. Nothing must obstruct people from hearing and receiving Christ's message.