This is the 6645th most frequent Chinese word.
未滿
"未滿" means "not yet full" or "under (a specified amount or age)."
In this sentence, '未滿' means 'not reaching' and indicates an age limit that individuals have not yet reached.
這場活動僅開放給未滿十八歲的青少年參加。
This event is open only to teenagers under eighteen years old.
Here, '未滿' signifies 'not reaching a minimum number', referring to an unmet threshold of participants.
由於未滿人數，該課程將延期舉行。
Due to an insufficient number of participants, the course will be postponed.
In this case, '未滿' conveys 'not reaching fullness', indicating the product is still available and not completely sold.