drawn-out 
adjective
Lasting or seeming to last longer than is necessary: after the long drawn-out years of waiting the end of the war was in sight...
- Since then, the necessary drawn-out processes added to the personal anguish that he's clearly suffered.
- The fourth is the slow, drawn-out demise of Soho itself.
- And by this point, the process became so slow and drawn-out that they were ineffective.
- potassium permanganate
- potassium–argon
- potassium–argon dating
- potation
- potato
- potato apple
- potato ball
- potato bean
- potato-beetle
- potato-bing
- potato blight
- potato-bogle
- potato bread
- potato bug
- potato cake
- potato chip
- potato clay
- potato crisp
- potato cyst nematode
- potato disease
- potato dumpling
- potato-eater
- potato eelworm
- potatoey
- potato eye