High time is a noun and means the time which is past the appropriate time. We generally use high time when we want to make a complaint that something hasn’t happened or complain that someone hasn’t done something when they were supposed to do it. Jack is Jane’s boss. She was supposed to be at work at 9, but it is 9:15 and she just arrived at the office.She has been late a few times this week. Jack says, “Jane you’re late again. It’shigh time you came to work on time!”You are at a concert hall. The concert was supposed to begin at 8pm. At 9pm, the concert begins. You can say, “It’s high time the band started playing!”
- You work very hard all morning at the office. It’s 2pm. Your coworker says, “It’s high time we took a lunch break.”