how to spell persevere
P-e-r-s-e-v-e-r
how to spell extreme
e-x-t-r-e-m-e
how to spell concrete
c-o-n-c-r-e-t-e
how to spell supreme
s-u-p-r-e-m-e
how to spell precede
p-r-e-c-e-d-e
how to spell adhere
a-d-h-e-r-e
how to spell interfere
i-n-t-e-r-f-e-r-e
how to spell athlete
a-t-h-l-e-t-e
how to spell completely
c-o-m-p-l-e-t-e-l-y
how to spell sincerely
s-i-n-c-e-r-e-l-y