Three letter words ending in -s are:YesBusAdsCosHasHisInsSisSosWas
Some four letter words starting with S and ending with F are:selfserfsurf
addressagelessanxiousbignesscolitiscompassconfessdrynessgenesisgeniusimpressjealousmitosisnewnessregressseriousshynesssinlesssuccesssunlesstedioustenuousundressuselesswitless
shoes ,
sacramentsscarecrowssegregatesshrewdnesssimplifiessleevelesssmoothnesssnowflakessociopathsspeechlesssquarenessstimulatessubscribes
stomata
Sunrisesspaciousstudioussensuoussonorousscissorssleeplessstraplessshiftlessshirtlessshinglessightlesssalacious
ActionsActivesActressAnimalsBeachesBeaconsBeaglesBeakersBeaniesBearersBeatersBeavers
said is a 4 letter word beginning with s and ending with d
crows, carts
sayssawsseesspys
* alas * axis