What is the origin of the idiom "at one's convenience" and when to use it?

The idiom "at one's convenience" has roots in formal etiquette and politeness. Its usage can be traced back to the 17th and 18th centuries when expressions of deference and respect were highly valued. It is often employed in professional settings, such as business communications, meetings, or appointments.

What is the origin of the idiom "at one's earliest convenience" and when to use it?

The idiom "at one's earliest convenience" emerged in the 18th century, primarily within formal correspondence and social etiquette. During this period, the use of polite language and deference in written communication was highly valued. The phrase was used to request prompt action or response while maintaining a respectful and considerate tone. Over the years, the phrase has become a standard and widely accepted way to convey a polite sense of urgency in various formal and professional contexts.