mano-a-mano

/M AA1 N OW0 AH0 M AA0 N OW0/
adjective
  1. 1

    In close confrontation

    โ€œWe sat tensely in the courtroom while the mano-a-mano struggle ensued between the two skilled lawyers.โ€

adverb
  1. 1

    Characterized by head-to-head competition or conflict.

    โ€œThe newcomer brashly engaged the veteran player mano a mano.โ€

Source: https://en.wiktionary.org/wiki/mano%20a%20mano, https://en.wiktionary.org/wiki/mano-a-mano