C1adjective3K

Long-time

UK /["/ˈlɒŋ taɪm/"]/US /["/ˈlɔːŋ taɪm/"]/

Definition

having been the particular thing mentioned for a long time

In simple words: a long period of time

Examples

  • his long-time colleague

Usage notes

Used to describe something that has existed or happened for many years. More common in informal contexts but can also be used in neutral settings. Avoid using it in very formal writing.

Grammar pattern

long-time + noun

Memory hint

Think of a clock with a long hand—time stretching far back.

Collocations

  • long-time friend
  • long-time employee
  • long-time issue

Synonyms

  • extended period
  • prolonged time
  • long duration

Antonyms

  • short-term

Common mistakes

  • Confused with 'longtime' as one word.
  • Using it in contexts that don't imply time, like 'long-time friend' instead of 'long-time acquaintance'.