Word
dangerous
Phoneticsdan·ger·ous, stress on the first syllable
US/ˈdeɪndʒɝəs/
UK/dˈeɪndʒəɹəs/
Definitions
01likely to cause harm
A1 · Beginner
adj. likely to cause physical harm, injury, or death.
adj. involving or causing exposure to injury, pain, or loss. This is the primary sense used for physical hazards.
日本語:危ない※
“It is dangerous to walk on the thin ice during the spring thaw.”
“The mountain pass becomes exceptionally dangerous during the winter months when heavy snowfall obscures the narrow trail and increases the risk of avalanches.”
Pitfall
It is danger to swim here.
It is dangerous to swim here.
Use the adjective 'dangerous' to describe a situation; 'danger' is the noun.
02threatening or aggressive
A2 · Elementary
adj. describes a person or animal that is likely to attack or hurt others.
adj. characterised by a disposition to inflict harm or injury; often used to describe volatile individuals or aggressive animals.
日本語:危ない※
“The police warned the public that the escaped tiger was very dangerous.”
“The suspect was considered armed and dangerous, prompting the authorities to issue a high-level alert to all surrounding residential areas.”
Synonyms
03critically ill
C1 · Advanced Medicine Formal · Archaic
adj. very sick and at risk of dying.
adj. referring to a medical state where a patient's life is at immediate risk. This usage is increasingly rare in modern speech but remains in specific medical or literary contexts.
日本語:危ない※
“The doctor said the patient's condition was dangerous after the long surgery.”
“The bulletin released by the hospital confirmed that the prime minister remained in a dangerous state following the sudden cardiac event.”
Antonyms
Etymology
From Middle English dangerous (“difficult, severe, domineering, arrogant, fraught with danger”), daungerous, from Anglo-Norman [Term?], from Old French dangereus (“threatening, difficult”), from dangier. Equivalent to danger + -ous. Displaced native Old English frēcne.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
ADJECTIVE
ADVERB
Related words
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A1 MoversIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.2.0–3.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 1.0–1.50–23TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.120–224
- Frequency
- Common
- Level
- A1 · BeginnerOxford
- Updated
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QR code
englishreference.com/q/dangerous
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「日本語」 data: JMdict (EDRDG), CC BY-SA 4.0