adshadow
/ˈædˌʃædəʊ/nounVerified NewThe trail of advertisements for something you already bought, following you because the system never registered the purchase.
The flight is booked; the luggage ads persist for weeks. Adshadow is the gap between the profile and the person — a campaign chasing a decision already made, paid for by an advertiser who will never know.
Etym. — *ad* + *shadow*; the purchase's unconverted echo, cast behind you like a shadow.
Rel. — pricefog
Novelty check: NEW · checked 2026-11-08
review evidence: wordstoreview/review-batch-3-03-tech.md
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Method: Editorial batch review — per-word exact-form web search (WebSearch/Tavily) per docs/REVIEW-criteria.md §2