slumps...
Examples are:
patter, matter, natter, batter, sitter, butter, bitter, litter, fitter, fatter, wetter, setter, letter
trait, level, harsh, rumor
Bookkeeper and bookkeeping.
carrot
teapot
Mirror
sense
Czar is a 4 letter word. It begins with C and ends with R.
In English, you is the only one.
zealot
brainbaconbatonbeginbegunbaronbasinblownbrawnbrownbruin
witswenswarswagswayswedswigswetswinswoeswuss
experience
racecar
descentdecideddiamonddiscarddiscorddividedelevateerasuregaininggrowingglowinghellishlateralliterallogicalmodicumoreganoreentertangenttrident
strengths
"TOURIST"
reader,
noon deed
giggling, rejigger
success
Sandman (starts with S ends with N - 7 letter word)
Cash is a 4 letter word that starts with c and ends with h.
An eight letter word that starts with S and ends with T: satiristshortestsmallestsmarteststagnantstalwartstiffeststridentsubtract