Add-a-Letter Anagram game

[Count]

Tear

 

[Mia6]

Count The kitty in your profile pic is lovely!

Rates

 

[Count]

Count The kitty in your profile pic is lovely!

Rates

Count says thank you.

Stared

 

[Mia6]

Roasted

Count You're welcome!

 

[Count]

Asteroid

 

[Boris Diamond]

Amortised

 

[Mia6]

Mediators

 

[Count]

Mediators

Still 9 characters. You forgot to add a letter.

My turn:
Dermatosis

 

[Mia6]

We'll start again. Can't find an eleven letter word.

Sear

 

[Count]

rates

 

[Mia6]

Stream

 

[Count]

Mastery

 

[Mia6]

Masterly

 

[Boris Diamond]

Salimetry

 

[Mia6]

starting new

debt

 

[Mia6]

starting new

debt

 

[Boris Diamond]

Bated

 

[Count]

Debate

 

[Boris Diamond]

Berated

 

[Mia6]

Waterbed

 

[Count]

Not too great I know but this is the only thing that I can think of:

Waterbeds