B2 adjective Formal

堅牢

/kenroː/

Strong, robust, and durable. Often used to describe physical structures, security systems, or logic.

Examples

3 of 5
1

堅牢な作りのカバンを買った。

I bought a sturdily made bag.

2

堅牢なセキュリティシステムを構築いたします。

We will build a robust security system.

3

これ、見た目より堅牢だね。

This is sturdier than it looks.

Word Family

Noun
堅牢性
Adverb
堅牢に
Adjective
堅牢だ
💡

Memory Tip

Ken (hard/solid) + Rou (strong/prison) = Solid as a prison wall.

Quick Quiz

重要データを( )なサーバーで管理する。

Correct!

The correct answer is: 堅牢

Examples

1

堅牢な作りのカバンを買った。

everyday

I bought a sturdily made bag.

2

堅牢なセキュリティシステムを構築いたします。

formal

We will build a robust security system.

3

これ、見た目より堅牢だね。

informal

This is sturdier than it looks.

4

彼の理論は、堅牢な論理に基づいている。

academic

His theory is based on robust logic.

5

堅牢なインフラ整備が経済発展を支える。

business

Robust infrastructure development supports economic growth.

Word Family

Noun
堅牢性
Adverb
堅牢に
Adjective
堅牢だ

Common Collocations

堅牢な構造 robust structure
堅牢なセキュリティ sturdy security
堅牢性に優れる excellent in durability
堅牢な守り sturdy defense
堅牢な地盤 solid ground

Common Phrases

堅牢な設計

robust design

堅牢な金庫

sturdy safe

堅牢な壁

solid wall

Often Confused With

堅牢 vs 頑丈

Ganjou is common for objects like chairs; Kenrou is more formal and used for systems, buildings, or abstract structures.

📝

Usage Notes

Frequently used in architecture, IT security, and manufacturing.

⚠️

Common Mistakes

Don't use for human health; use 'Ganjou' or 'Kenkou' instead.

💡

Memory Tip

Ken (hard/solid) + Rou (strong/prison) = Solid as a prison wall.

📖

Word Origin

Sino-Japanese for 'solid' and 'firm/strong'.

Grammar Patterns

堅牢な〜 〜は堅牢だ

Quick Quiz

重要データを( )なサーバーで管理する。

Correct!

The correct answer is: 堅牢

More technology words

削除

A1

The act of deleting or removing digital data, written text, or specific items from a list or document. It is the standard term used for the 'Delete' function in software, apps, and computer systems.

認証

A1

Authentication is the process of verifying a person's identity or the validity of information. In technology, it refers to logging into a system using credentials like a password or fingerprint to prove who you are.

補完

B1

To add something to another thing to make it better or complete. It is used when two parts work together to fill in each other's gaps.

脆弱

B2

Being fragile, weak, or vulnerable. In modern contexts, it often refers to social structures, physical health, or cybersecurity flaws.

基幹

B2

The core, backbone, or most essential part of a system, organization, or infrastructure. It supports the entire structure and is critical for its operation.

互換性

B2

The ability of computer components, software, or systems to work together or be used in place of each other; compatibility.

媒体

B2

A medium or means through which something is transmitted, expressed, or achieved. It can refer to physical storage, communication channels, or biological vectors.

親和性

B2

Affinity, compatibility, or how well two things get along or fit together. Used in technology for software compatibility and in sociology for cultural fit.

画期的

B2

Describing something that is groundbreaking, innovative, or opens a new era in a particular field. It is frequently used in academic writing to describe new theories or technologies that change the status quo.

推奨

B2

To recommend a particular course of action, method, or product because it is considered superior, beneficial, or official. It is often used in technical guidelines or health advice.

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