Definition of long-termer in English:

long-termer

Pronunciation /ˌlɒŋˈtəːmə/

See synonyms for long-termer

noun

  • 1informal A person serving a long prison sentence.

  • 2A long-serving official, employee, etc.

Origin

Late 19th century; earliest use found in Chambers's Journal of Popular Literature. From long + term + -er.