-с

Etymology
Perhaps related to 🇨🇬, 🇨🇬, e.g.,.

Etymology
An abbreviated form of,.

Suffix

 * 1)  sir, ma'am (an honorific Russian suffix that was formerly used to emphasize the speaker’s politeness or servility before a person of higher social status).

Usage notes

 * The suffix can be attached to various parts of speech, usually at the end of a sentence, usually only once.
 * The suffix was common in speech in the early and mid-19th century, but over the course of the late 19th century it went out of fashion, acquiring an undertone of servility, self-deprecation, and sometimes irony. By the 20th century, it was seen as an archaism, used either ironically or as a conscious marker of traditionalism in educated speech. In modern Russian, it's very rare, and is used for emphasis in a humorous, ironic, or sarcastic way.