Relationship wasn’t good with sis…

When we were younger my sister and I didn’t get along. Like at all. And I had a big temper. I would read a lot and had a bigger vocabulary, and my sister who has adhd and dyslexia, didn’t grasp a bigger vocabulary at that time. So what I would do was, because I knew if this, I would use random big words knowing my sister didn’t understand them (to be fair I didn’t know what they meant either, but my sis didn’t know that). So my sister felt very dumb and I would win a lot of arguments. And when she would tell on me she couldn’t really because she could only say that I was being mean to her because I used big words . I don’t do this anymore because:
1. I have a better relationship with her now
And
2. I found out later on that she started knowing what the words meant as we got older