SNAKESsssss
silostereosoloshampoostucco
swatch
endlessexpressexoticsembarks
rhombus
Snack
tennisthistoss+plural of any word that starts with Ttactlesstackinessthalamustamenesstastelesstastinesstatterstearlesstenaciousthanklessthemselvesthermosthesisthesaurustidingstininessthinnessthoughtfulnessthoughtlessthoroughnessthrombosisthustightstigresstightnesstimelesstimelinesstinnitustogethernesstoiletriestonelesstongstoothlesstorturoustortuoustouchinesstraitoroustrashinesstreacheroustreasonoustreelesstremuloustrendinesstrellistremendoustrespasstrickinesstrimmingstritenesstruthfulnesstrichinosistrolleybustrustworthinesstuberculosistuberoustumultuoustunelesstweezerstyrannosaurustyrannous
Gratuitous gregarious
salient, scarlet, servant
sew, saw, sorrow
spay, stay, slay,
-roses - reasonspretty much any r word with an s at the end, to make it plural.
* say * shy * sky * sty * spy * sly * soy