Tending to ask questions, or to want to explore or investigate; inquisitive; (with a negative connotation) nosy, prying.
Caused by curiosity.
Leading one to ask questions about; somewhat odd, out of the ordinary, or unusual.
Careful, fastidious, particular; (specifically) demanding a high standard of excellence, difficult to satisfy.
Carefully or artfully constructed; made with great elegance or skill.