Quite simply, you are asking for a definition when none is needed.
Here's the way I see it, YMMV.
If you ask me, "Are you alive?", my only true answer can be "Yes".
If instead I come back with "Define 'alive'", then I'm merely attempting a derail, because first of all I know what you're asking and the answer is "Yes" (or else we wouldn't be having a conversation) and secondly I know that coming up with a string of words that adequately and sufficiently describes "alive" is extremely difficult and contentious.
It's the same with the question "Are you conscious?"
If you're in a position to answer at all, the answer must be "Yes". It cannot be anything else.
To demand a definition is merely a derail, a red herring.
That's the way I see it.
If you see it differently, then we have nothing to talk about unless you can explain why in God's name you actually need a definition to answer this question.