aparajitah

aparājitaḥ — who had never been vanquished; BG 1.16-18
aparājitaḥ — not conquered; SB 5.3.14
aparājitaḥ — Aparājita; SB 5.20.39
aparājitaḥ — not defeated by anyone else; SB 9.23.29
mahāśaktiḥ sahaḥ ojaḥ aparājitaḥ — Mahāśakti, Saha, Oja and Aparājita; SB 10.61.15
aparājitaḥ — unconquerable by others; SB 11.15.30