Until Now
Up To Now, So Far
adverb
You know that 今 means now. What you probably don't know is that まで means "until." So, this word means until now.
The reading for this word is the kun'yomi reading which you learned previously when you learned the vocab word 今. You can tell this is a kun'yomi reading because it has hiragana attached. So if you know that, you should be able to read this word as well.
今まで知らなかった
to not have known something until now
今まで見たことがない
to never have seen something before
今までやってきた
to be done by now
今まで、ありがとう。
Thanks for everything so far.
今まで何をしていたんですか。
What have you been up to so far?
今までコウイチが言ってたことは本当だった。
What Koichi has been saying until now was true.