Re: Define grappling
The tough part for all of us is agreeing on a common paradigm for sure!
That is why I said above, probably very poorly, that there is a spectrum of things that all arts have in them.
Philosophically I would agree that aikido can cover non-physical de-escalation or resolution. I think most of us would agree though that as a martial art, aikido must be prepared to back that up with some use of force. O Sensei talks about this in his writings.
What makes up that force? sure, lots of things. based on my definition, at the core of the art, it requries kuzushi or off balancing.
Not all grappling situation need submission holds etc. Kuzushi or body dominance is the most important thing.