prolonged
1. [ adjective ] relatively long in duration; tediously protracted
Synonyms: lengthy extended protracted drawn-out
Examples:

"a drawn-out argument" "an extended discussion" "a lengthy visit from her mother-in-law" "a prolonged and bitter struggle" "protracted negotiations"

Related terms: long
2. [ adjective ] drawn out or made longer spatially
Synonyms: elongated lengthened extended
Examples:

"Picasso's elongated Don Quixote" "lengthened skirts are fashionable this year" "the extended airport runways can accommodate larger planes" "a prolonged black line across the page"

Related terms: long
3. [ adjective ] of illness; developing slowly or of long duration
Related terms: chronic
Similar spelling:   prolonge
  prolong
  proline
  prelone
  praline
  prolongation