sailboat
salesman
samizdat
sarcomas
Saturday
saucepan
savannas
scalawag
scapulae
scapular
scimitar
scofflaw
seasonal
sectoral
sequoias
shanghai
shipload
showboat
sidereal
signoras
singular
skeletal
skinhead
skullcap
societal
somewhat
soothsay
There is no one-word 8-letter palindrome in English, apparently!
to simplify.
Cloister
An eight letter word for portable canopy is umbrella.As in "I forgot my umbrella".
Question.
Piercing.
apothegm, tapeworm, thallium
Armchair is an 8 letter word. The 7th letter is i.
mournful
downtown
crevasse
The word is starting! Starting, staring, string, sting, sing, sin, in, I.
goverment
Some eight letter words with the seventh letter S are:bigamistchildishdisguiseflourishgoldfishgoodnessinterestlanguishmotoristoptimismprincesssuitcase
caripace
licensed
startling starting staring string sting sing sin in I