long-serving

the compound adjective 'long-serving' is a modern english formation built from two native english elements. the first element, 'long', derives from old english 'lang' or 'long', of germanic origin, related to dutch 'lang' and german 'lang', from a pie root meaning 'long'. the second element, 'serving', is the present participle of the verb 'serve', which entered english from old french 'servir', ultimately from latin 'servire' meaning 'to be a slave to, to serve', from 'servus' meaning 'slave'. the compound logically combines the concept of extended duration ('long') with the continuous action of performing duties ('serving'), creating a term specifically used to describe tenure in employment or position.

Structure: long (extended duration) + serving (performing duties) long (old english, adjective/adverb meaning 'extended in space or time'); serving (english, present participle of the verb 'serve', meaning 'to perform duties or provide a service')