Below is a list of words with D as the third letter, to help you do the same.
addax added adder addio addle aedes aided aider aides aidoi aidos aldea alder aldol andro ardeb ardor ardri asdic audad audio audit awdls baddy badge badly bedad bedel bedes bedew bedim bedye biddy bided bider bides bidet bidis bidon boded bodes bodge bodle budas buddy budge budis budos byded bydes caddy cadee cades cadet cadge cadgy cadie cadis cadre cedar ceded ceder cedes cedis cided cider cides codas codec coded coden coder codes codex codon cuddy cyder dadah dadas daddy dados dedal diddy didie didos didst doddy dodge dodgy dodos duddy duded dudes eider eidos elder eldin ended ender endew endow endue faddy faded fader fades fadge fados fedex fidge fidos fuddy fudge gaddi gades gadge gadid gadis gadje gadjo gadso giddy godet godly godso gudes hadal haded hades hadji hadst heder hedge hedgy hided hider hides hodad hodja hudna hudud hydra hydro indew index indie indol indow indri indue iodic iodid iodin jaded jades jedis jodel judas judge judos kades kadis kedge kedgy kiddo kiddy kidel kidge kudos kudus kudzu kydst laded laden lader lades ladle ledge ledgy ledum lidar lidos loden lodes lodge ludes ludic ludos madam madge madid madly madre medal media medic medii medle middy midge midgy midis midst modal model modem moder modes modge modii modus muddy mudge mudir mudra nadas nadir neddy nidal nided nides nidor nidus nodal noddy nodes nodus nuddy nuder nudes nudge nudie nudzh odder oddly oidia olden older oldie order ordos paddy padis padle padma padre padri pedal pedes pedro podal poddy podex podge podgy podia puddy pudge pudgy pudic pudor pudsy pudus qadis radar radge radii radio radix radon redan redds reddy reded redes redia redid redip redly redon redos redox redry redub redux redye rider rides ridge ridgy roded rodeo rodes rudas rudds ruddy ruder rudes rudie saddo sades sadhe sadhu sadis sadly sados sadza sedan seder sedes sedge sedgy sedum sidas sided sider sides sidha sidhe sidle sodas soddy sodic sodom sudds sudor sudsy teddy tidal tiddy tided tides today todde toddy udder undam undee under undid undue undug updos updry urdee vaded vades video vodka vodou vodun wadds waddy waded wader wades wadis wadts wedel wedge wedgy widdy widen wider wides widow width wodge wudus yedes yodel yodhs yodle