s

An abbreviation for various words, such as 'south' or 'second'.

"The train is heading S."

The nineteenth letter of the English alphabet, a consonant.

"The word 'snake' begins with an 's'."

A suffix used to indicate possession for singular nouns.

"The dog's bone."

A suffix used to form the plural of most nouns.

"Add an 's' to make 'cat' plural."

A suffix used for third-person singular present tense verbs.

"He walks every day."