～以上（は）

• Reading: いじょうは
• Romaji: ijou wa
• Formation: Verb plain form + 以上（は） / Noun + である以上（は）
• Kanji breakdown: 以 (い) = by means of; 上 (じょう) = above, upper

Meaning

A conjunction meaning 'now that,' 'since,' or 'given that.' It expresses the speaker's conviction that once a certain condition holds, a particular consequence or obligation naturally follows.

In its conjunctive use, 以上（は） indicates that because a certain fact or decision has been established, there is a natural or moral obligation that follows. It carries a strong tone of resolve or expectation — once the premise is true, the conclusion is inescapable. For example, 約束した以上は守るべきだ means 'now that you've made a promise, you should keep it.' It is stronger than から or ので in that it implies the speaker feels the consequence is not merely logical but morally or socially binding. 以上は can follow verbs in plain past or present form, nouns with である, and な-adjectives with である/な. It is common in both spoken and written formal Japanese.

Examples

1. 引き受けた以上は最後まで責任を持つべきだ。 Now that I have taken it on, I should see it through to the end.
2. 日本に住んでいる以上、日本の法律を守らなければならない。 As long as you live in Japan, you must follow Japanese law.
3. 学生である以上は勉強を優先すべきだ。 As long as you are a student, you should prioritise studying.

Usage Guide

Context: spoken, written, business

Tone: resolute

Do Say

• プロである以上、中途半端な仕事はできない。
• 試合に出る以上は勝ちを目指すべきだ。
• この道を選んだ以上は後悔しない。

Don't Say

• 雨が降っている以上は傘を持っていく。(Using 以上は for a simple cause-and-effect with no moral weight — から or ので is more natural here) → 雨が降っているから傘を持っていく。
• お腹がすいた以上はご飯を食べる。(Using 以上は for trivial, automatic responses — 以上は implies a weighty consequence or obligation) → お腹がすいたからご飯を食べる。

Origin & History

The word 以上 originally means 'above' or 'beyond.' In this grammatical use, it extends metaphorically to mean 'given that something has gone beyond a certain point' — once a threshold has been crossed, the consequence must follow.

Cultural Context

Generation: All ages

Social background: Universal