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調査
ちょうさ
investigation
警察は事件を調査している。
The police are investigating the case.
formal
A systematic examination or inquiry to gather information about a subject, often for official or academic purposes.
政府は新しい政策の効果を調査した。
The government investigated the effects of the new policy.
市場調査を行う必要がある。
We need to conduct market research.
Used in contexts like police work, academic studies, market research, or government inquiries.
formal
To examine or inquire systematically.
専門家がその問題を調査した。
Experts investigated the problem.
Also used as a suru-verb (調査する).
Pro Tip
Formal vs. Casual
調査 is formal and used in official or academic contexts. For casual inquiries, consider using 見る (みる, 'to check') or 調べる (しらべる, 'to look into').
Gold Rule
When to Use 調査
Use 調査 when referring to systematic, official, or detailed investigations (e.g., police work, academic research, market studies). Avoid using it for casual or brief checks.
Word Origin
From the verb 調べる (しらべる, 'to investigate') + 査 (さ, 'to inspect'), forming a compound noun meaning 'investigation' or 'examination'. The verb form is 調査する.
Usage Notes
常に正式な文脈で使用され、日常会話ではあまり使われません。研究や公式な報告書で頻繁に見られます。
Word Breakdown
調
to investigate or examine
root査
to inspect or verify
root和英辞典