Select the most appropriate one-word substitution for the given group of words.

A post with little work but high salary 

Sinecure

The most appropriate one-word substitution for "a post with little work but high salary" is sinecure.

• Plumpost is a humorous word for a high-paying job.
• Obscure means not well-known or understood.
• Manicure is the treatment of the hands and fingernails, especially to improve their appearance.

The word sinecure comes from the Latin word "sine cura," meaning "without care." A sinecure is a position that requires little or no work but still pays a high salary. It is often used to describe a position that is given to someone as a reward for political favors or other reasons, rather than for their skills or qualifications.