Need not意思

"Need not" is a contraction that means "do not need to" or "don't need to." It is used to express that something is not necessary or required. For example:

• You need not worry about the test; you've studied enough. (You don't need to worry about the test; you've studied enough.)
• The report need not be submitted until next week. (The report doesn't need to be submitted until next week.)
• You need not attend the meeting if you're busy. (You don't need to attend the meeting if you're busy.)

In each case, "need not" is used to indicate that there is no obligation or requirement to do something.