A kind of word chain!

[EscapeGirl]

Used

[Mistery]

Educator

[EscapeGirl]

Oregon

[Lilliputt]

Onus

[Mistery]

Usa

[Lilliputt]

Said

(Uhm, are abbrevations allowed? Oooh, I see)

[Mistery]

Ideal

(well, there are not many words with us... and there is no rule against abbreviations )

[Lilliputt]

Almost

(There are words that begins with "us", like "usury", "user" or "usual". Point is though that if abbreviations are allowed the point of having a rule against useless endings becomes pointless )

[Mistery]

Star

(Well, USA is very commonly used, you almost never hear the whole expression, so it's more like a word. That's why I put it... But okay, let's not put any kind of abbreviations)

[Lilliputt]

Arrange

( Me hears and obeys oh mighty GOD....uhm... I mean Mod )

[Mistery]

Genre

[Lilliputt]

Response

[Mistery]

Seven

[Lilliputt]

Endanger

[Mistery]

Era