A sinecure (from Latin sine, without, and cura, care) means an office which requires or involves little or no responsibility, labour, or active service. Sinecures have historically provided a potent tool for governments or monarchs to distribute patronage, while recipients are able to store up titles and easy salaries.
A sinecure is not necessarily a figurehead, which generally requires active participation in government, albeit with a lack of power. A sinecure, by contrast, has no real day-to-day responsibilities, but may have de jure power.