Seven letter words change one or two letter to make a new word

believe

decieve

receive

bedevil

endives

Receive to bedevil took 3 letters: b,d,l.

deliver

I think I must have been going from “deceive”. Apologies all around. Time for some coffee.

slivers

service

crevice

revised

dervish

shivved

shimmed

diadems

demands

Sandman

mandate

tandems

stadium