-ces (pl)
definition: of Inadvertence

-ces is a 4 letter word that begins with a - and ends in an S

-ess
definition: A suffix used to form feminine nouns; as, actress, deaconess, songstress.

-ess is a 4 letter word that begins with a - and ends in an S

-gos (pl)
definition: of Archipelago

-gos is a 4 letter word that begins with a - and ends in an S

-ics
definition: A suffix used in forming the names of certain sciences
Systems etc. as acoustics mathematics dynamics statistics politics
-ics is a 4 letter word that begins with a - and ends in an S

-ies (pl)
definition: of Boothy

-ies is a 4 letter word that begins with a - and ends in an S

-ous
definition: A suffix denoting that the element indicated by the name bearing it
Has a valence lower than that denoted by the termination -ic; as nitrous sulphurous etc. as contrasted with nitric sulphuric etc.
-ous is a 4 letter word that begins with a - and ends in an S

-ous
definition: An adjective suffix meaning full of
Abounding in having possessing the qualities of like; as in gracious abounding in grace; arduous full of ardor; bulbous having bulbs, bulblike; riotous, poisonous, piteous, joyous, etc.
-ous is a 4 letter word that begins with a - and ends in an S

-ses (pl)
definition: of Apophysis

-ses is a 4 letter word that begins with a - and ends in an S

Aces (pl)
definition: of Ace

Aces is a 4 letter word that begins with an A and ends in an S

Alas (in)
definition: An exclamation expressive of sorrow
Pity or apprehension of evil; -- in old writers sometimes followed by day or white; alas the day like alack a day or alas the white.
Alas is a 4 letter word that begins with an A and ends in an S

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