| A | B |
| darkling | blindly |
| darwinism | natural selection of evolution |
| dastard | a base coward |
| datum | premise satrting point or a given fact |
| dauntless | Fearless |
| day-man | a day laborer |
| dead-heat | race with more than one winner |
| dearth | scarity of something customary or needed |
| death's-head | a human skull |
| deigh | to deem worthy of notice or account |
| deist | one who believes in God but denies Holy ghost |
| deity | a god, goddess, or divine person |
| deject | to dishearten |
| dejection | feeling sad when something is not accepted |
| delectable | delightful to taste |
| delection | delightful |
| deleterions | hurtful morally, or physically |
| delicacy | that which is agreeable or fine |
| delineate | to represent by sketch or diagram |
| deliquesce | to dissolve gradually and become liquid |