The act of identifying defects or assigning blame, particularly in a context where reproach might damage reputation. Paul uses this verb twice in 2 Corinthians, anxious to avoid any grounds for criticism in his ministry—both in general conduct (6:3) and in financial administration (8:20). His concern reflects the vulnerability of Christian workers to accusation and the importance of maintaining integrity beyond reproach. The word emphasizes not just criticism but its potential to undermine ministry effectiveness.