Big words that starts with d?

Answer 1

15 letters: demographically, disillusionment, dispassionately, distastefulness, dissatisfaction

16 letters: disproportionate, depressurization, disagreeableness, declassification

17 letters: demonstrativeness, depersonalization, decriminalization

18 letters: disenfranchisement, distinguishability

How about "disestablishmentarianism"? It means the concept of separation of church and state. It's the root of the much more popular word "antidisestablishmentarianism" which a lot of people like to rattle off as a token "big word" they know.

Though, you're probably looking for something more practical. To be honest, there are thousands of big words that start with D. My advice would be browsing a dictionary under D until something big hits your eye. A lot of them involve simply adding "dis-" or "de-" onto longer concepts.

Answer 2

drawn out The ceremony could have been brief, but instead it was long and drawn out.