What is the origin of the idiom "have designs on something" and when to use it?

The idiom "have designs on something" originated from the concept of designing or planning a specific outcome or goal. The phrase suggests that a person has ambitious intentions or a strategic plan to achieve or acquire something, often with a sense of determination or calculated pursuit. It implies having a clear objective in mind and actively working towards it, sometimes with underlying motivations that may not be immediately apparent.

What is the origin of the idiom "have designs on someone" and when to use it?

The phrase "have designs on someone" originated in the early 19th century and draws upon the imagery of planning or scheming to achieve a particular goal or desire. This idiom is used to express a strong sexual attraction or desire towards another person. It implies that the individual has intentions or aspirations of becoming involved with that person in a sexual capacity.