casual
This word carries a lightness of spirit, suggesting a lack of tension or rigidity. In social contexts, it signals a space where rules are suspended and people can be their authentic, unpolished selves. It is generally positive when describing atmosphere or clothing, evoking comfort and ease.
However, when applied to behavior or attitudes toward responsibility, it shifts toward a negative connotation. In these instances, it implies a dangerous level of indifference or a failure to recognize the gravity of a situation, bordering on negligence or flippancy.
Meanings
Relaxed and unconcerned; lacking formality or strictness.
He has a very casual approach to his work.
Not intended for long-term commitment or serious relationship.
They have been in a casual relationship for a few months.