-с

Perhaps related to Estonian -sse, Livonian -zõ (“[illative suffix]”), e.g., mōzõ.

-с • (-s)

1. illative suffix
   • V. I. Ščankina (2011) Russko-mokšansko-erzjanskij slovarʹ [Russian-Moksha-Erzya Dictionary], Saransk, →ISBN

     пряда/пряс (доверху)

     pŕada/pŕa s (doverhu)

     to the top (to the top [in Russian])

-с • (-s)

1. Forms the plural form of nouns.

-с • (-s)

1. Forms nouns from nouns and verbs, sometimes with no apparent change of meaning.

• -съ (-s) — Pre-reform orthography (1918)

An abbreviated form of су́дарь (súdarʹ, “sir”), суда́рыня (sudárynja, “ma'am”).

-с • (-s)

1. (obsolete) 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).

   да-с ― da-s ― yes, milord (or milady)

   так-с ― tak-s ― yes, sir (or ma'am)

   слу́шаю-с ― slúšaju-s ― at your service, milord (or milady)

• 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.

• словое́рс (slovojérs)