The Kanji: 以 (I)
The kanji 以 means "by means of," "with," or "starting from." It originally depicted a person using a tool, representing the concept of using something as a basis or method. This character primarily functions as a grammatical particle indicating means, scope, or starting points.
Common Words & Example Sentences
1. 以上 (ijō) - More than/As above
身長は170cm以上必要だ。
"Height must be 170cm or more."
2. 以下 (ika) - Less than/As below
価格は1000円以下です。
"The price is 1000 yen or less."
3. 以内 (inai) - Within
3日以内に返信します。
"I will reply within 3 days."
4. 以外 (igai) - Except/Besides
彼以外は全員賛成だ。
"Everyone agrees except him."
In summary, 以 is essential for constructing comparative and limiting expressions - defining ranges (以上/以下), time frames (以内), and exclusions (以外). It serves as a fundamental building block for precise communication in Japanese.