's
definition: A contraction for is or (colloquially) for has.

's is a 2 letter word that begins with a ' and ends in an S

-s
definition: An adverbial suffix; as in towards
Needs always -- originally the genitive possesive ending. See -'s.
-s is a 2 letter word that begins with a - and ends in an S

-s
definition: The suffix used to form the plural of most words; as in roads
Elfs sides accounts.
-s is a 2 letter word that begins with a - and ends in an S

-s
definition: The suffix used to form the third person singular indicative of English verbs; as in falls
Tells sends.
-s is a 2 letter word that begins with a - and ends in an S

Si
definition: A syllable applied
In solmization to the note B; more recently to the seventh tone of any major diatonic scale. It was added to Guido's scale by Le Maire about the end of the 17th century.
Si is a 2 letter word that begins with an S and ends in an I

So (ad)
definition: About the number
Time or quantity specified; thereabouts; more or less; as I will spend a week or so in the country; I have read only a page or so.
So is a 2 letter word that begins with an S and ends in an O

So (ad)
definition: In like manner or degree; in the same way; thus; for like reason; whith equal reason; -- used correlatively
Following as to denote comparison or resemblance; sometimes also following inasmuch as.
So is a 2 letter word that begins with an S and ends in an O

So (ad)
definition: In such manner; to such degree; -- used correlatively with as or that following; as
He was so fortunate as to escape.
So is a 2 letter word that begins with an S and ends in an O

So (ad)
definition: In that manner or degree; as
Indicated (in any way) or as implied or as supposed to be known.
So is a 2 letter word that begins with an S and ends in an O

So (ad)
definition: In the same manner; as has been stated or suggested; in this or that condition or state; under these circumstances; in this way; -- with reflex reference to something just asserted or implied; used also with the verb to be
As a predicate.
So is a 2 letter word that begins with an S and ends in an O

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