My 'estimation' of his films was never very high. [=I never thought his films were very good]
My 'estimation' [=(more commonly) 'estimate'] of the amount of materials we needed was wrong.
She went down 'in her supporters' estimation' after she voted against the plan.
(..) the same frailties as all human belings. he's the only father I have. Therefore, he is my model of manhood, and my estimation of him will govern the prospects of my adult relationships. So I hope you bear in mind that any knock at him is a knock at me, and I'm far too young to defend (..)1989 TvShow: The Simpsons Title: Simpsons Roasting on an Open Fire Season: 1 Episode 1