Definition of 長居無用 (ながいむよう)

expression
There's no point in staying (here) any longer, There's no point in prolonging a (the) visit, There's no point in extending one's stay(yojijukugo)
Related Kanji
long, leader, superior, senior
reside, to be, exist, live with
nothingness, none, ain't, nothing, nil, not
utilize, business, service, use, employ