confrontational (adj.)

1630s, "action of bringing two parties face to face," for examination and discovery of the truth, from Medieval Latin confrontationem (nominative confrontatio), noun of action from past-participle stem of confrontari, from assimilated form of Latin com "with, together" (see con-) + frontem (nominative frons) "forehead" (see front (n.)). International political sense is attested from 1963 and traces to the "Cuban missile crisis" of the previous year.

suffix forming adjectives from nouns or other adjectives, "of, like, related to, pertaining to," Middle English -al, -el, from French or directly from Latin -alis (see -al (2)).