idiom "He's gone right down in my estimation"

[aditis]

English Idioms and Expressions, Intermediate level

ESL/EFL Test #9 "Go ahead", question 4

He's gone right down in my estimation now that I've heard what he has done to his family.

(a) I think often of him
(b) I think a lot of him
(c) I don't think at all of him
(d) I don't think much of him

English Idioms and Expressions, Intermediate level

ESL/EFL Test #9 "Go ahead", answer 4

I don't think much of him now that I've heard what he has done to his family.

Correct answer: (d) I don't think much of him
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what does the idiom "He's gone right down in my estimation " mean exactly?

aditis

[Mister Micawber]

.
I respect him less.
.
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Native English teacher at Mister Micawber's