The Greek adjective ámetros (ἄμετρος) means without measure, immeasurable, or beyond bounds. It comes from the negative prefix a- and metron (measure).
Ámetros appears in 2 Corinthians 10:13-15 where Paul contrasts himself with his opponents who 'boast beyond measure' — they measure themselves by wrong standards and claim credit for others' work. Paul refuses to boast ámetros — beyond the limits God has assigned to him. This is a striking theology of calling: each believer is given a specific sphere (kanon) of ministry, and faithfulness means working within that God-given measure rather than overreaching into another's field. The one who boasts immoderately has lost sight of grace — everything we have was received.