Synset

relatively long in duration; tediously protracted
<adj.all>   freq. cnt.: 15 freq. cnt.: 6 freq. cnt.: 5 freq. cnt.: 4

drawn-out

extended

lengthy

prolonged

protracted

sample sentences

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