Seven-letter words - change zero to two letters to make a new word (Part 1)

[working off of nonzero]

Spooner

Sponser

respond

Spurned

Denudes

Sudden

“Sudden” is not seven letters.

deludes

Seclude

exclude

Exudate

sedated

saddens

maddens

seminal

Laments

salient

Clients

Listens

Sensile

silence