Indolent is an adjective meaning slow or lazy. It can take an indolent teenager hours to get out of bed on a weekend morning. Often it's noon before he finally comes shuffling down to breakfast in his pajamas.
An indolent person is slow and lazy — not the type of person you'd want running your corporation or competing with you in a relay race. Doctors use the word indolent to describe medical conditions that are slow to progress. If you're diagnosed with an illness, you'd prefer an indolent one over one that spreads quickly.