dusty, a. [powdery], pulverulent, pulverous, pulverized.
dutiful, a. [obedient], duteous, [submissive], deferential, [docile].
duty, n. [responsibility], incumbency, [accountability]; [service], [business], [work], [function], [office]; [tax], impost, toll, excise, [custom]. Associated words: ethics, deontology, casuistry, ethology, morals, ethicist, ethically, supererogate, supererogation.
dwarf, n. pygmy, gnome, [manikin], dandiprat, Lilliputian, [elf], midget, [runt], Tom Thumb, pigwidgeon, homunculus, hop-o-my-thumb.
dwarf, v. [stunt], atrophy.
dwarfish, a. diminutive, undersized, Lilliputian, pygmy, pygmean, runty, [stunted], [undeveloped], tiny, atrophied.
dweller, n. denizen, [resident], sojourner, [inhabitant], habitant.
dwelling, n. [residence], domicile, [house], [abode].
dwindle, v. [decrease], [diminish], [shrink].
dwindling, n. [decrease], [diminution], [shrinkage].