Letter: d
- deaconess, acolyte, beadle, clerk, deacon, elder, lecturer, reader, sacristan, sexton

- deactivate, break up, debrief, decommission, demilitarize, demob, demobilize, detach, disarm, disband, discharge, disintegrate, dismiss, disorganize, disperse, dissolve

- deactivation, breakup, demobilization, detachment, disbandment, disintegration, dismissal, disorganization, dispersal, dispersion, dissolution, parting, release, separation, split up

- dead against, adverse, against, antagonistic, anti, antipathetic, antithetical, athwart, balancing, clashing, compensating, conflicting, confronting, contra, contradictory, contrary

- dead ahead, dead, direct, directly, due, forthright, in line, right, straight, straightforward

- dead and buried, ago, antiquated, antique, bygone, dated, dead, deceased, defunct, departed, elapsed, expired, extinct, finished, forgotten, gone

- dead and gone, asleep, at rest, breathless, dead, deceased, defunct, demised, departed, done for, fallen, finished, gone, inanimate, late, late lamented

- dead asleep, asleep, comatose, dead, dormant, oblivious, out, sleeping, slumbering, unconscious

- dead body, ashes, body, bones, cadaver, carcass, carrion, clay, corpse, corpus delicti, dead, deceased, departed, dust, earth, late lamented

- dead calm, calm, doldrums, horse latitudes, lull

- dead centre, axis, centre, core, heart, hub, kernel, marrow, middle, nave, navel, nub, nucleus, pith, pivot, umbilicus

- dead certainty, assurance, inevitability, infallibility, necessity, predestination, predetermination, sureness, surety, truth

- dead circuit, break, circuit, leg, loop, path, printed circuit, short, short circuit

- dead end, bar, barrier, blank, blank wall, blind, blind alley, blind gut, blind-alley, block, blockade, blockage, bottleneck, box, caecal, caecum

- dead flat, earth, esplanade, flat, flatland, floor, ground, horizontal, ledge, level, parterre, plain, plane, platform, prairie, steppe

- dead give-away, babbling, betrayal, blabbering, blabbing, divulging, give-away, indiscretion, leak, letting out, obvious clue, tell-tale, tell-tale sign, unwitting disclosure

- dead heat, Tweedledum and Tweedledee, coeval, concomitant, contemporary, deadlock, draw, fair shake, same, stalemate, stand-off, tie

- dead letter, aimlessness, air letter, bull, chain letter, drop letter, emptiness, empty sound, encyclical, fan letter, form letter, futility, inanity, insignificance, letter of credit, letter of introduction

- dead level, earth, esplanade, flat, flatland, floor, ground, horizontal, ledge, level, parterre, plain, plane, platform, prairie, steppe

- dead lift, bitch, chore, handful, hard job, tough proposition

- dead loss, bereavement, cost, damage, debit, denial, deprivation, destruction, detriment, dispossession, divestment, expense, forfeit, forfeiture, injury, perdition

- dead man, ashes, body, bones, cadaver, carcass, carrion, clay, corpse, corpus delicti, dead, deceased, departed, dust, earth, late lamented

- dead march, andante, burial, burial at sea, burying, crawl, creep, death knell, death song, deep six, dirge, dogtrot, elegy, eulogy, funeral, funeral march

- dead matter, copy, manuscript, matter, typescript

- dead of night, awful silence, blackness, dark, darkness, darkness visible, dead, deathlike silence, golden silence, hush, hush of night, inaudibility, intense darkness, lucid stillness, lull, midnight

- dead person, ashes, body, bones, cadaver, carcass, carrion, clay, corpse, corpus delicti, dead, deceased, departed, dust, earth, late lamented

- dead reckoning, aspect, attitude, azimuth, bearing, bearings, celestial navigation, chronometer, exposure, fix, frontage, lay, lie, line of position, orientation, plane sailing

- dead right, OK, absolute, accurate, all right, alright, correct, faultless, flawless, just, just right, meticulous, perfect, proper, right, straight

- dead ringer, actual thing, carbon copy, companion, copy, ditto, double, duplicate, effigy, equivalent, exact counterpart, exact likeness, facsimile, fellow, homograph, homonym

- dead run, burst, canter, dash, dogtrot, gallop, jog trot, lope, plunge, race, run, rush, scamper, scud, scurry, scuttle
