Meaning and Usage
The word 未満 (みまん) means "less than" or "below" a certain number or standard. It is used to specify a strict upper limit that is not included. For example, 18歳未満 means "under 18 years old," excluding 18 itself.
Common Contexts
You often see 未満 in rules, regulations, or conditions, such as age restrictions, minimum numbers for events, or weight limits. It is a formal expression commonly used in official or written Japanese.
Collocations and Patterns
- 数字 + 未満: Indicates a quantity less than the number (e.g., 30人未満 - fewer than 30 people).
- 年齢 + 未満: Age restrictions (e.g., 20歳未満 - under 20 years old).
- 体重 + 未満: Weight limits (e.g., 50キロ未満 - less than 50 kilograms).
Nuances and Tips
未満 excludes the number itself, unlike 以下 which means "less than or equal to." Learners often confuse these two, so remember 未満 is strictly less than. It is more formal and used in official contexts rather than casual speech.
Summary
Use 未満 when you want to clearly state a strict upper limit that does not include the number itself, especially in formal or official settings.