B2 adjective Neutral

必須

[hissɯ]

Something that is absolutely necessary or required. It cannot be omitted or avoided.

Examples

3 of 5
1

パスポートは海外旅行に必須のアイテムだ。

A passport is an essential item for overseas travel.

2

この科目は卒業のために必須です。

This subject is mandatory for graduation.

3

必須アミノ酸を摂取する。

Consume essential amino acids.

Word Family

Noun
必須
Adjective
必須の
💡

Memory Tip

Hi (inevitably) + Su (necessary) = Inevitably necessary.

Quick Quiz

このアプリを使うには、会員登録が( )です。

Correct!

The correct answer is: 必須

Examples

1

パスポートは海外旅行に必須のアイテムだ。

everyday

A passport is an essential item for overseas travel.

2

この科目は卒業のために必須です。

formal

This subject is mandatory for graduation.

3

必須アミノ酸を摂取する。

academic

Consume essential amino acids.

4

登録にはメールアドレスが必須となります。

business

An email address is required for registration.

5

それは必須条件ではないけれど、あった方がいい。

informal

It's not a mandatory condition, but it's better to have it.

Word Family

Noun
必須
Adjective
必須の

Common Collocations

必須条件 essential condition / prerequisite
必須項目 required item/field
必須科目 compulsory subject
必須知識 essential knowledge
必須のツール must-have tool

Common Phrases

必須とされる

to be considered essential

必須ではない

not mandatory

〜が必須になる

...becomes a must

Often Confused With

必須 vs 必修

Hisshuu is specifically for school curriculum/courses; Hissu is general necessity.

📝

Usage Notes

Commonly seen on web forms (required fields) and job descriptions.

⚠️

Common Mistakes

Sometimes written as 必すご (wrong kanji/okurigana).

💡

Memory Tip

Hi (inevitably) + Su (necessary) = Inevitably necessary.

📖

Word Origin

Hi (always/without fail) and Su (to need).

Grammar Patterns

〜が必須だ 必須の〜

Quick Quiz

このアプリを使うには、会員登録が( )です。

Correct!

The correct answer is: 必須

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