追跡（ついせき、tsuiseki）
- tracking

The Japanese word 追跡追跡 (tsuiseki) means "to pursue," "to track," or "to follow." It implies the act of keeping watch on someone or something, often with the intention of catching them, gathering information, or monitoring their movements. It suggests a focused effort to observe and follow a target. The concept involves maintaining contact with something in motion or attempting to determine its location.

⚫︎犯人は警察に追跡されています。 Translation: The criminal is being pursued by the police. ⚫︎彼はライバルの動向を追跡している。 Translation: He is tracking his rival's movements. ⚫︎GPSを使って荷物の位置を追跡できる。 Translation: You can track the location of the package using GPS.

This word is appropriate in many situations when talking about: ⚫︎ Criminal investigations (pursuing suspects). ⚫︎ Following someone's travels or activities. ⚫︎ Tracking the progress of something (like a project or a disease). ⚫︎ Monitoring the location of an object (using GPS or other technology). It's commonly used in formal and informal contexts.

⚫︎ The word is typically written in kanji as 追跡. ⚫︎ The reading is ついせき (tsuiseki) in hiragana. ⚫︎ There are no common variations in okurigana for this word.

⚫︎ 追う (ou): to chase, to pursue. ⚫︎ 追跡する追跡する (tsuisekisu-ru): to pursue, to track (a more formal and explicit verb form). ⚫︎ 探す (sagasu): to search for (can be used in the context of looking for someone or something). ⚫︎ 尾行する (bikousuru): to tail, to follow someone discreetly.

⚫︎ 逃げる (nigeru): to escape, to run away. ⚫︎ 見失う (miushinau): to lose sight of. ⚫︎ 見過ごす (misugosu): to overlook.

警察は、逃げた容疑者を昼夜を問わず 追跡 している。 ・Translation: The police are pursuing the escaped suspect day and night. ・Explanation: This sentence uses 追跡 to describe the police's continuous efforts to find and apprehend a suspect.

その会社は、顧客のオンライン行動を 追跡 し、マーケティング戦略に役立てている。 ・Translation: That company tracks customer's online behavior and utilizes it in its marketing strategy. ・Explanation: This sentence demonstrates how the word 追跡 can be used in the context of business or data analysis.

The word 追跡 is formed from the kanji 追 (tsui), which means "to chase" or "to follow," and 跡 (seki), which means "track," "trace," or "footprint." Therefore, 追跡 literally means "to follow the tracks" or "to chase the trail." This perfectly captures its meaning.