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a long time is not in our dictionary (yet). Here's what it could mean:

Confidence: high

Results generated using artificial intelligence.

noun phrase

  • A significant or lengthy duration.

Example Sentences

Examples are provided to illustrate usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For a long time, the likelihood of surviving pancreatic cancer has been extremely low.

From Science Daily • Jun. 4, 2026

There are two things: One is something people have said for a long time the pool needs, that somebody has to fill in the spaces between the concrete slabs to make sure they don’t leak.

From Slate • Jun. 4, 2026

Thesaurus

Possible Synonyms

Words in our thesaurus

other words

  • eons
  • since the dawn of time
  • yonks
  • an eternity
  • a coon's age

Possible Antonyms

Words in our thesaurus

other words

  • an instant
  • a New York minute
  • a short while
  • a hot second
  • a moment

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