Having now clocked some time with TRY, I like it how it is. I don't really want it to do anything besides convert definitional errors to ~null~ antiforms...and maybe a particular definitional error to a ~NaN~ antiform. But I want what it gives back to be falsey if it traps an error.
That doesn't mean there isn't some kind of good idea here. Perhaps a good enough idea to retake another word like ATTEMPT for it.