aparajitah—not defeated by anyone else. SB 9.23.30, SB 9.23.31, SB 9.23.30-31
aparajitah—not conquered SB 5.3.14
aparajitah—who had never been vanquished Bg 1.16, Bg 1.17, Bg 1.18, Bg 1.16-18
Can't find any compound Sanskrit words containing aparajitah.