indeed

The story

1. Middle English · inherited fromindede
2. English todayindeed

From Middle English indede, univerbation of the phrase in dede (“in sooth, in fact”). Cognate with Saterland Frisian innerdoat, innedoat (“indeed”), West Frisian yndied (“indeed”), Dutch inderdaad (“indeed”), German in der Tat (“indeed”). By surface analysis, in + deed. Compare in fact, in truth, etc. First attested in the early 14ᵗʰ century.