noun, noun which may take the genitive case particle 'no'
facing the other way; facing away
Describes a person or thing turned away from the speaker or a reference point. Often used literally, but can also imply indifference or lack of engagement.
彼は向こう向きに座って、窓の外を見ていた。
He sat facing the other way, looking out the window.
向こう向きの態度を取られると、話しかけにくい。
When someone takes an attitude of facing away, it's hard to start a conversation.
後ろ向き means 'backward-facing' or 'negative/pessimistic', while 向こう向き is more neutral, simply 'facing the other way'.
Compound of 向こう (mukō, 'the other side') and 向き (muki, 'direction, orientation').