Definition
"Unfastidious" describes someone who is not concerned with cleanliness or detail; the opposite of fastidious. It implies a lack of attention to hygiene and a disregard for order. Think of a teenager's messy bedroom! Unfastidious people may be comfortable with a certain level of disarray and are not easily bothered by dirt or imperfections. It's like someone who doesn't mind wearing wrinkled clothes. This can be seen as either a virtue or a flaw, depending on the context. It is the opposite of meticulous.