A Logolept’s Diet of Obscure, Obsolete, Curious and Downright Odd “D” Words
The letter “D” corresponds to the Semitic daleth and Greek delta (Δ). “D” is also the Roman numeral for 500. The form (D) is thought to derive from an early pictograph, possibly Egyptian, indicating the folding door of a tent. Later “D” got its more rounded shape, with which we are familiar, from the Chalcidian alphabet, which the Latins may have borrowed for their alphabet (https://www.britannica.com/topic/D-letter). Words beginning with “D”, numero quattro in the English alphabetical order, are an eclectic lot. They can be delightful, decadent or distasteful. Here’s a brief sampler of logophile-friendly “D” words for serious verbivores. 
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
(word) Dacnomania (meaning) a compulsive urge to bite (derivation) Gk dáknō (“bite”) + -mania 🦷
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dactylogram fingerprint Gk Daktylos (“finger”) + –gramma (“that which is written/drawn”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Daedalist
aviator; pilot
Gk from Didalos, L Daedalus (“skilfully wrought”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dapifer one who brings meat to the table (ie, a servant) origin unknown 🍖
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Defenestration
throw someone through a window; remove or dismiss someone from a position of authority
L de “down from” + –fenestra (“window”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Deimatic pattern of behaviour of a bluffing character (zool) Gk deimatóo (“to frighten”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Deipnosophist learned amateur Gk deipnon (“dinner”) + –sophistēs (“knowledgeable in the arts” (from Athenaeus’‘Deipnosophistaí’)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Deltiologist someone who collects and studies postcards [Gk. deltion (“writing tablet”) + -ist]
Deltiologist (image: emaniuz-collection.blogspot.com)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Depontification throw someone off a bridge L de + –pons (“bridge), following pattern of defenestration
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Didascalar Didactic; pertaining to teaching origin unknown
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Diddicoy scrap dealer; Brit: group of caravan-dwelling travellers who adopt a Gypsy-like lifestyle origin unknown
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Diestrus a period of sexual inactivity New L dia + -estrus from Gk Oistros (“gadfly”, “sting”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Digladiator swordfighter origin unknown
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dithyrambic wildly irregular in form Gk dithyrambos (unknown, pre-Hellenic?)
Diversiloquent able to speak on different topics; in different ways L. diversi (“diversus”) + –loquēns (“to speak”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Docent an academic immediately below the professorial rank; a voluntary guide at a museum, zoo or art gallery L docēns (“to teach”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Doctiloquent speaking learnedly L from doceō (“I teach”) +-loquēns (“to speak”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Domatologist
professional housekeeper
origin unknown
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dontopedology science of putting your foot in your mouth Gk odoús (“tooth”) + –pes (“foot”) + –logos (“word”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Douanier customs official Fr, origin unknown
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Doulocracy rule by slaves Gk doûlos (“servant”, “slave”) + –kratéō (“rule)
Doulocracy: Spartacus, slave army leader
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dragoman interpreter, translator or guide Gk dragumanus from Arab targuman (“interpreter”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dulciloquent speaking in a sweet, pleasant and agreeable way L. dulcis (“sweet”) + -loquēns (“to speak”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Durative describing an action that is continuing, incomplete; transforming L. durare (“to harden”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dysania Difficult to wake up in the morning origin unknown
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dyschromatopic colour-blind Gk dys (“bad”) + -chroma (“colour”) + -ops (“eye”)
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dysphemism using an offensive word in the place of an inoffensive one Gk dys (“bad”) + –pheme “speech”,
⍔⌼⌼⌼⌼⌼⌼⌼⌼⍠⌼⌼⌼⌼⌼⌼⌼⌼⍔
Dystelology doctrine of purposelessness Gk dys (“bad”) + –télos (“end”, “purpose”, “goal”) + –logos
⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎⚗︎