用心堅固

Reading

Kana: ようじんけんご

Romaji: youjinkengo

Definition

noun

adj-na

1

very cautious (watchful, vigilant); taking every possible precaution

Note: yojijukugo

Kanji

用

Readings: ヨウ、 もち.いる

Meanings: utilize, business, service, use, employ

心

Readings: シン、 こころ、 -ごころ

Meanings: heart, mind, spirit, heart radical (no. 61)

堅

Readings: ケン、 かた.い、 -がた.い

Meanings: strict, hard, solid, tough, tight, reliable

固

Readings: コ、 かた.める、 かた.まる、 かた.まり、 かた.い

Meanings: harden, set, clot, curdle