adv
[Date: 1300-1400; Origin: in + deed]
[sentence adverb]
used to emphasize a statement or answer
　The blood tests prove that Vince is indeed the father.
　'Would it help if you had an assistant?' 'It would indeed.'
[sentence adverb]formal
used to introduce an additional statement that emphasizes or supports what you have just said
　I didn't mind at all. Indeed, I was pleased.
especially BrE used with 'very' and an adjective or adverb to emphasize a statement or description
　Most of the essays were very good indeed.
　Thank you very much indeed.
spoken especially BrE used to show that you are surprised or annoyed by something that someone has just told you
　'He said he was too busy to see you.' 'Did he, indeed?'
why/how/who etc indeed?
spoken used when someone has asked you a question, to show that you do not know the answer and you do not think there can be a satisfactory answer
　'Why would John have left without saying a word?' 'Why indeed?'
　'How can anyone justify such shameful behaviour?' 'How indeed?'