Etimology
From Middle English indede, contraction of the phrase in dede (“in sooth, in fact”); equivalent to in + deed (similar in formation to in fact, in truth, etc.). Cognate with Saterland Frisian innerdoat, innedoat (“indeed”), West Frisian yndied (“indeed”), Dutch inderdaad (“indeed”), German in der Tat (“indeed”). First attested in the early 14th century.
adverb
indeed (not comparable)
(modal) Truly; in fact; actually.
(degree, after the adjective modified) In fact.
Examples
Synonyms: certainly, definitely, in fact, indubitably, really, surely, truly, undoubtedly; see also Thesaurus:actually
Indeed, he made several misplays.
Yes, I do indeed look very similar to you.
Orion hit a rabbit once; but though sore wounded it got to the bury, and, struggling in, the arrow caught the side of the hole and was drawn out. Indeed, a nail filed sharp is not of much avail as an arrowhead; you must have it barbed, and that was a little beyond our skill.
I was about to say that I had known the Celebrity from the time that he wore kilts. But I see that I will have to amend that, because he was not a celebrity then, nor, indeed, did he achieve fame until some time after I left New York for the West.
She was like a Beardsley Salome, he had said. And indeed, she had the narrow eyes and the high cheekbone of that creature, and as nearly the sinuosity as is compatible with human symmetry. His wooing had been brief but incisive.
With fresh material, taxonomic conclusions are leavened by recognition that the material examined reflects the site it occupied; a herbarium packet gives one only a small fraction of the data desirable for sound conclusions. Herbarium material does not, indeed, allow one to extrapolate safely: what you see is what you get […]
[The researchers] noticed many of their pieces of [plastic marine] debris sported surface pits around two microns across. Such pits are about the size of a bacterial cell. Closer examination showed that some of these pits did, indeed, contain bacteria, […].
As a soccer player, he is terrible indeed.
interjection
indeed
Indicates emphatic agreement.
With interrogative intonation (low-high) indicates serious doubt.
Examples
Synonyms: absolutely, for real, forsooth, indubitably, sure thing, true that
"I am a great runner." "Indeed!"
"I am a great runner." "Indeed?"