I should hope so/not

I should hope not

I would naturally expect that this would not happen or be true. A: "Don't worry, you won't have to pay for the additional service." B: "I should hope not, seeing as I never agreed to it in the first place!"
See also: hope, not, should

I should hope so

I would naturally expect that this would happen or be true. A: "My manager said you can get a refund on the item." B: "I should hope so—it arrived broken in two pieces!"
See also: hope, should
Farlex Dictionary of Idioms.

I should ˈhope so/not

,

so I should ˈhope

(spoken) used to say that you feel very strongly that something should/should not happen: ‘Nobody blames you.’ ‘I should hope not!’ ‘She did apologize.’ ‘So I should hope!’
See also: hope, not, should
Farlex Partner Idioms Dictionary
See also:
  • (I) hope not
  • hope not
  • not for a second
  • not for a minute
  • not for a moment
  • aint
  • ain't
  • not for a instant
  • not for a/one minute/moment/second/instant
  • by no means