How to say "research" in Japanese

Choosing the right word
  • 研究けんきゅうJLPT N4approx.Common
    noun, suru verb, transitive verbThe default word for research as systematic study or investigation, especially academic and scientific work; it also covers studying a subject. Choose this for most everyday uses of 'research'.
    私はエイズの研究けんきゅうに従事じゅうじしている。↗
    I am engaged in AIDS research.
  • noun, suru verb, transitive verbThe loanword, typically for gathering or checking information, as in media, marketing, or preparation for writing; for academic research, choose 研究 instead.
  • 探究たんきゅうCommon
    noun, suru verb, transitive verbResearch in the sense of earnest, probing inquiry — the pursuit of truth or deeper understanding, often philosophical or intellectual rather than a concrete project; for routine research work, 研究 is the word you want.
    Those books which have made a lasting contribution to man's quest for truth, we call great books.

Use 研究 for academic and scientific research; 「リサーチ」 is the loanword, typically for gathering information in business or media contexts; 探究 suggests earnest, often philosophical inquiry into truth rather than routine research.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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