more; further; in addition; on top of this
Used to indicate something additional or beyond the current situation, often with a negative or questioning nuance.
What more could you want?
at this stage; now; now that things have come to this
Typically used as この上は to mean 'now that it has come to this' or 'at this point', often followed by a determination or resolution.
I can't cause any more trouble.
Now that it has come to this, I have no choice but to do my best until the end.
Rarely used kanji form; 此 is an uncommon character for これ.
Compound of この (this) and 上 (above/on top of). The literal meaning 'on top of this' extended to 'furthermore' and 'at this stage'.