ma'am
UK[mɑːm]US[mæm]
n
A polite or respectful form of address for a woman, especially one of authority or high status.
Etymology
The word "ma'am" is a contraction of the respectful address "madam," which itself entered English in the 13th century from the Old French "ma dame," meaning "my lady." This French phrase derives from the Latin "mea domina," with "mea" meaning "my" and "domina" meaning "lady" or "mistress of the household." The contraction "ma'am" emerged in the 17th century as a spoken, informal shortening, reflecting natural phonetic erosion, and became standardized as a formal, respectful term, particularly for addressing royalty, female officers, or women in positions of authority.
Analysis
This is a contracted form and is not productively segmented into independent morphemes in modern English.
Examples
Excuse me, ma'am, you dropped your glove.
Yes, ma'am, I understand the instructions.
The sergeant addressed the new recruits as "ma'am" and "sir."