1. Having existed or persisted or continued in a particular role or state for a long time
   "a longtime friend";
   - long-time

1. A prolonged period of time
   "They hadn't seen each other for a long time";
   - age, years, donkey's years [Brit, informal], lifetime, yonks [Brit, informal]

Derived forms: long times

See also: old

Type of: period, period of time, time period, time span

Encyclopedia: Longtime