yodan verb with 'hu/fu' ending (archaic), intransitive verb
to face each other; to be opposite
Archaic intransitive yodan verb. In modern Japanese, the same meaning is expressed by 向かい合う (むかいあう) or 相対する (あいたいする).
An old document says, 'The two armies faced each other across the river.'
Compound of 相 (あい, mutual) + 向かふ (むかふ, archaic form of 向かう, to face). The verb follows the classical yodan conjugation pattern.