Definition: "Until now" is an adverbial phrase used to describe a situation or action that has been true or happening from the past up to the present moment. It often appears in negative statements to indicate that something has not occurred or been the case up to this point.
"Until now" can also be used in more complex sentences to emphasize the significance of a change. For example: - "Until now, our team had never lost a game, but this season has been challenging."
While "until now" itself is not part of a common idiom or phrasal verb, you might encounter phrases like: - "Wait till now" (meaning to hold on until the present time) - "From now on" (meaning from this point forward, contrasting with "until now")
"Until now" helps convey the idea that something has not happened or been true up to the present time.