The Greek adverb apotomos means sharply, severely, or bluntly — without softening or compromise. It describes the manner of rebuke or correction that is cutting and direct. Paul uses it for the manner in which he will deal with persistent sin if necessary.
Paul uses apotomos twice in pastoral contexts (2 Corinthians 13:10; Titus 1:13), and both uses reveal a theology of loving firmness. Church discipline, when necessary, should be sharp and direct — not because the leader is harsh but because persistent sin demands unambiguous confrontation. In Titus 1:13, Paul instructs Titus to 'rebuke them sharply, so that they will be sound in the faith.' This is corrective surgery on behalf of spiritual health. Theologically, apotomos refutes a false gentleness that allows error to fester; it is severity in service of grace.