I'm afraid...

I'm afraid

I'm sorry to say. Used to politely introduce or soften a statement that may be unpleasant, upsetting, or disappointing. I'm afraid that your application has been rejected due to a failure to provide adequate documentation. I was hoping I'd be there in time to see the performance, but they canceled my flight because of the snow, I'm afraid.
See also: afraid
Farlex Dictionary of Idioms.

I’m afraid (that)...

(spoken) used as a polite way of telling somebody something that is unpleasant or disappointing, or something that you are sorry about: I’m afraid I can’t come to your party. ‘Have you got change for ten pounds?’ ‘I’m afraid not.’ I’ve got some bad news, I’m afraid. ‘Is this the best you can do?’ ‘I’m afraid so.’
Farlex Partner Idioms Dictionary
See also:
  • a run on (something)
  • a rush on (something)
  • be pressed for time
  • ask (something) of
  • ask of
  • be pushed for time
  • be at a disadvantage
  • at a disadvantage
  • address (one's) comments to (someone or something)
  • address comments or remarks to