To me, abuse is someone repetitively saying or doing something that harms you- and that could be physically or mentally.
For instance, someone lying about something. That's not abuse. But if they continue lying about different things and our relationship is completely built on a stack of lies, then yeah, it's abusive. My BPD daughter comes to mind where she'd ask for $10-50 daily for gas and food, yet she was buying drugs and alcohol. If I said no, she'd scream and rage about what a terrible father I was. That was abuse...and not just the yelling part. The being nice to me part to manipulate me to give her money was just as abusive because it was being done with bad intentions.
There's also one-off abuse as well- which I think we don't have to define. Hitting, insulting, belittling, manipulating...all that is certain abuse. But I think we'd differ on when it reaches that level to call it abusive. For instance, someone pushes me because they're rushing to the bathroom and I'm blocking their way...is that abusive? Maybe yes, maybe no. You'd have to see a little bit more of the relationship to really have an understanding.
I'll add one more thing- friends and family usually know better than we do if our relationships are abusive. We tend to brush off so much as regular daily cohabitating that it all begins to feel normal. Oh, my partner is moody in the mornings, that's just how they are. Or, he only hits me when he's drinking heavily, it's my fault for saying something that upset him. When we're so close to it, we can see something completely different from the actual truth.
Bottom line, if someone is acting in a way that harms you over a period of time, that's abuse. Everyone has bad days so again, I'm not talking about a one-off incident where someone loses their cool and shouts for a few minutes. If it happens once, probably not abuse. It it happens weekly, then yeah...it's probably an abusive relationship.


