As adjectives the difference between stelled and stilled
is that stelled is (stell) while stilled is brought to a standstill.
As a verb stilled is
(still).
stelled
English
Adjective
(
en adjective)
(stell)
(dialectal, or, obsolete) Firmly placed or fixed.
(obsolete) Starry.
stilled
English
Adjective
(head)
brought to a standstill
quieted
Verb
(head)
(still)