悪あく性せい

あ

く

せ

い

Common wordFreq.FrequencyTop 20,000

Meanings

1

noun which may take the genitive case particle 'no', noun

malignant; virulent; pernicious

Primarily a medical term describing diseases, especially cancers, that are aggressive or life-threatening. Also used in fixed phrases like 悪性貧血 (pernicious anemia).

検けん査さの結けっ果か、腫しゅ瘍ようは悪あく性せいだっ

た

。

The test results showed the tumor was malignant.

悪あく性せいのインフルエンザが流りゅう行こうしている。

A virulent strain of influenza is going around.

Usage patterns

〈事こと〉が悪あく性せい化かするfor something (a tumor, condition) to turn malignant
良りょう性せいだった腫しゅ瘍ようが悪あく性せい化かすることもある。
A tumor that was benign can sometimes turn malignant.
悪あく性せいの〈物もの〉a malignant ~ (tumor, disease, etc.)
検けん査さの結けっ果か、悪あく性せいの細さい胞ぼうが見みつかった。
The test results showed malignant cells.
悪あく性せい度どが〈形けい容よう詞し〉the degree of malignancy is (high/low)
このがんは悪あく性せい度どが高たかいと診しん断だんされた。
This cancer was diagnosed as highly malignant.

Kanji

悪bad, vice, rascal
性sex, gender, nature

Opposites

良りょう性せい
良性 means 'benign' (not cancerous or dangerous), the direct medical opposite of 悪性 'malignant'.

Don't confuse with

悪あく質しつN1
悪質 describes malicious intent or poor quality (e.g. 悪質な商法 'a shady business practice'), whereas 悪性 is limited to medical/biological aggressiveness like cancer.

Word family· 8

凶きょう悪あく性せい
heinousness; atrocious nature; extreme brutality
悪あく性せい度ど
malignancy; grade of malignancy
悪あく性せい水すい腫しゅ
malignant edema; malignant oedema
悪あく性せい腫しゅ

Etymology

Compound of 悪 (aku, 'bad, evil') and 性 (sei, 'nature, property'). The medical sense is a direct adaptation of the Western medical concept of malignancy.

瘍よう

malignant tumor; cancer

悪あく性せい貧ひん血けつ

pernicious anemia

Show 3 more

悪あく性せい新しん生せい物ぶつ
malignant neoplasm; malignant tumor
悪あく性せい黒こく色しょく腫しゅ
malignant melanoma
悪あく性せいリンパ腫しゅ
malignant lymphoma