Passive aggressives are unreasonable, indirectly aggressive through words and behaviour, blame others not themselves, and repeat their behaviour over time.
My H is more PA than my dad, but there are similarities. Dad had a totally dysfunctional relationship with his mother, and had been deeply hurt by her (and my grandmother in turn by her father...), but his way of dealing with problems was to criticize and deny my right to reply by saying "this is my house and what I say goes" and order me to my room. So the effect was the same... I wasn't allowed to reply, and he could get very angry (so not exactly PA). But I would reply anyway, furiously. He could be very unfair. He could be both aggressive (a furious temper) and indirectly aggressive.
The other thing he'd do was to talk to my mother about us in a loud voice, but pretending he didn't know I could hear. Every time it would freeze me in shame, even though my "sins" were not so bad.
Like his mother before him, he cut himself off from any friends he sometimes made, and found fault with everyone. It was his way of protecting himself. He also did that PA thing of avoiding doing things people asked him to do (so he could do it when he felt in control)
But my mother didn't partake in the dance. She understood his pain and difficulties, and ours too, and very rarely lost her temper. I think she had a hard time with him because he was so mistrusting of others, including her. She always listened to us, and interceded with my father when he was unreasonable. She knew how to leave alone to calm down, and would calmly ask my father to do things, without losing her temper and nagging. My dad (now 82) is still very negative about people and life, but has recognised after 55 years of marriage that his wife is very loving and loyal.
My mother is pretty much my hero, and one I look to for inspiration. I'm sharing this because although my father is more aggressive than PA, he has some of the characteristics, but my mother's attitude was great... she neither accepted his bad behaviour nor overreacted, and kept on with her own interests (and they are many!) so his behaviour didn't define her.