In medicine, causing little or no pain: as, an indolent tumor.Avoiding, or characterized by the avoidance of, exertion; indulging or given to indulgence in ease; indisposed to labor; lazy; listless; sluggish: as, an indolent person or life.Synonyms Lazy, Slothful, etc. (see idle); Supine, Careless, etc. (see listless).