追跡|ついせきtsuiseki[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. suru verb, transitive verb, no-adjectivechase; pursuit; tracking; stalking
    その警官けいかんは泥棒どろぼうを追跡ついせきした。↗
    The policeman chased the thief.
  2. suru verb, transitive verb, no-adjectivefollowing up; tracing
Conjugation
Dictionary form追跡する(ついせきする)
Polite (masu)追跡します(ついせきします)
Negative (nai)追跡しない(ついせきしない)
polite (masen)追跡しません(ついせきしません)
classical zu / nu追跡せず・追跡せぬ(ついせきせず・ついせきせぬ)
Past (ta)追跡した(ついせきした)
polite (mashita)追跡しました(ついせきしました)
Past negative (nakatta)追跡しなかった(ついせきしなかった)
polite (masen deshita)追跡しませんでした(ついせきしませんでした)
Te form追跡して(ついせきして)
Potential追跡できる(ついせきできる)
Passive追跡される(ついせきされる)
Causative追跡させる(ついせきさせる)
Causative passive追跡させられる(ついせきさせられる)
Conditional (ba)追跡すれば(ついせきすれば)
tara追跡したら(ついせきしたら)
Volitional追跡しよう(ついせきしよう)
polite (mashou)追跡しましょう(ついせきしましょう)
Imperative追跡しろ(ついせきしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym追尾ついびNeutralTailing from behind, often with vehicles or radar, as in 「敵機を追尾する」; 「追跡」 also covers tracing how something develops.
  • Synonym追うおうNeutralVerb for chasing, also used figuratively for pursuing goals or trends; 「追跡」 is a noun.
  • Synonym追いかけるおいかけるNeutralVerb meaning to chase or run after; 「追跡」 is a noun and leans toward tracking and investigation.
  • Synonym追っかけるおっかけるCasualColloquial for chasing, also for following idols or celebrities; 「追跡」 leans toward written style.
  • Synonym追蹤ついしょうWrittenA separate word read 「ついしょう」 with much the same meaning; written-style and very rare — write 「追跡」 in everyday use.
  • Related突き止めるつきとめるNeutralTo find out the truth or locate something, as in 「原因を突き止める」; 「追跡」 stresses the process of chasing or tracking.
  • Related後追いあとおいNeutralChasing along behind someone, and by extension imitation or jumping on a trend; 「追跡」 centers on tracking and investigation.
  • Related猛追もうついNeutralHot pursuit, chasing hard to catch up, mostly in races and competitions; 「追跡」 is about tracking a target.
  • RelatedフォローNeutralLoanword for follow-up and social-media following; 「追跡」 is about tracking someone's movements.
  • Related跡づけるあとづけるNeutralTo trace back and examine the origins and course of something; 「追跡」 focuses on tracking whereabouts.

Use 「追跡」 for tracking a target or following up on how something develops, as in 「追跡調査」 and 「荷物の追跡」. For tailing behind — vehicles, radar — pick 「追尾」; to pin down a truth or cause, 「突き止める」; as verbs, say 「追う」 or 「追いかける」.

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

Japanese definitions
  1. 逃にげる者ものの後あとを追おうこと。
  2. その後あとの経過けいかをたどって調査ちょうさ・研究けんきゅうすること。
Kanji in this word
English equivalents
See also

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

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