long·time 
/ˈlɑ:ŋˈtaɪm/ adjective
always used before a noun /ˈlɑ:ŋˈtaɪm/ adjective : having been something specified for many years
▪ the longtime chairman of the committee ▪ longtime residents of the neighborhood ▪ her longtime boyfriend/editor/manager/partner ▪ longtime rivals
▪ the longtime chairman of the committee ▪ longtime residents of the neighborhood ▪ her longtime boyfriend/editor/manager/partner ▪ longtime rivals
