What rhymes with dangerous?

serious, delirious, a ruckus

There may not be a perfect rhyme, just close rhymes.
actlessactressaegisagelessaimlessairlessaliceamosangusaniseanusanxiousaptnessarmlessartlessatlasauspiceavisawelessaxisbacchusbacklessbadnessbaldnessbarenessbaselessbasenessbasisbassesbeardlessbiasbignessblacknessblamelessblandnessblanknessbleaknessblindnessblithenessblondnessbloodlessblousesbluenessbluntnessbodicebogusboisterousboldnessbondlessbonelessbonusbootlessborisboundlessbowednessbrainlessbrakelessbralessbranchlessbrashnessbravenessbreadlessbreathlessbrieflessbriefnessbrightnessbrimlessbrisknessbroadnessbrusknessbrusquenessbucklelessbulbousburgessbusbusinessbussbuttresscactuscallouscalluscalmnesscampuscanvascanvasscaptiouscaptresscarcasscarelesscastelesscaucuscauselesscautiousceaselesscensuschalicechallischangelesschastenesscheapnesschecklesscheerlesschicnesschildlesschillnesschinlesschoicenesschoruschristmaschurchlesscinderouscircuscirruscitrusclaimlessclasslesscleannessclearnessclosenesscloudlesscoarsenesscodelesscoituscoldnesscompassconcusscongressconsciousconuscoolnesscoppicecordlesscornicecorpuscost-pluscostlesscountesscountlesscoynesscrassnesscrestlesscrevicecrewlesscrimelesscrisiscrispnesscrocuscrossnesscrudenesscruelnesscumbrouscurelesscurtnesscusscutenesscutlasscypresscyprusdaftnessdaisdallasdampnessdanknessdarknessdatelessdauntlessdavisdeadnessdeafnessdearnessdeathlessdeepnessdeftnessdennisdensenessdermisderrisdexterousdimnessdingusdirenessdiscusdiscussditchlessdonenessdorisdoubtlessdouglasdrabnessdreamlessdriplessdrynessduchessductlessdullnessdulnessdumbnessdustlessearlesselvisempressendlesserosestrousestruseyednesseyelessfacelessfadelessfaintnessfairnessfaithlessfalsenessfamousfastnessfatnessfaultlessfaustusfearlessfellnessfencelessferrisferrousfetusfewnessfibrousfiercenessfinenessfirelessfirmnessfitnessflatnessflawlessfleetnessflightlessflushnessfocusfoglessfondnessfootlessforcelessformlessfortressfoulnessfoundressfracasfranknessfreenessfreshnessfriendlessfringelessfruitlessfullnessfungousfungusfurnacefuselessfussgainlessgamenessgaseousgauchenessgauntnessgaynessgearlessgenghisgenusgibbousglabrousgladnessglibnessglottisglumnessgoddessgodlessgoodnessgorgeousgougesgracelessgraciousgrampusgrandnessgratisgravelessgravenessgraynessgreatnessgreennessgreynessgrievousgrimacegrimnessgrossnessgroundlessgruffnessguilelessguiltlessgustlessgutlesshairlesshalenesshandlesshaplessharasshardnessharmlessharnessharshnesshatlessheadlessheartlessheatlessheedlessheellessheinousheiressheirlesshelplesshighnesshingelesshoarsenesshocushomelesshooplesshopelesshoracehornlesshorselesshospicehostesshotnesshouselesshubrishugenesshumoroushumushuntresshybrishydrousibisictusillnessirisisisisthmusjanusjaundicejawlessjealousjesusjewessjoblessjointressjoylessjoyousjudasjuicelessjusticejustnesskansaskeellesskeennesskeylesskindnesskinglesskinlesskoumisskumisslamenesslandlesslarcenouslargenesslatenesslatticelaundresslawlesslaxnessleaflessleannessleaselessledgelessleglessleprouslettucelewdnesslewislifelesslightnesslikenesslimblesslimbuslimpnesslinelessliplesslistlesslithenesslitmusloathnesslocklesslocusloftlesslonenessloosenesslorislotusloudnesslouislovelesslownesslucklesslupuslusciouslushnesslustrouslysismadnessmadrasmagusmaimednessmalenessmalicemanlessmantismarquessmasslessmatchlessmattressmeannessmeatlessmeeknessmemphismenacemidasmildnessmindlessminusmirthlessmistressmodelessmodusmoistnessmonstrousmoonlessmorrismortismortisemosesmucousmussmutenessmutinousnacrousnamelessnaplessnarcousnarisnauseousnearnessneatnessnecklaceneedlessnervelessnervousnewnessnexusnicenessnimbusnisusnitrousnoiselessnonplusnorrisnoticenovasnovicenoxiousnudenessnumbnessoddnessofficeogressoldnessonenessonusopusorisorniceorrispainlesspalacepalenesspapposepappouspappusparisparlousparvispathlesspeeresspeerlesspelvispenispercusspertnessphallusphyllispinnacepiouspipelesspiusplacelessplainnessplanlessplexusplumpnesspluspocuspointlesspompousporousporpoiseposhnesspoulticepracticepreciousprefacepremisepricelesspriestessprimnessprincessprogresspromisepromptnesspronenessproudnessprowessptosispumicepurchasepurenesspurposepusquaintnessqueernessquenchlessquicknessranknessraptnessrarenessrashnessraucousrawnessrealnessrebusrecklessrectusrednessreinlessresponsiblenessrestlessrhesusrhombusrichnessrictusrifenessrighteousrightnessrimlessrimousripenessrodlessrooflessrootlessroughnessroundnessrubusruckusrudenessrufousrulelessrumpusrunglessrunlessruthlesssadnesssafenesssagenesssaltlesssamenesssanenesssaplesssarcousscabrousscalelessscantnessscarcenessscarlessscentlessscirrhousscirrhussclerousscorelessscrumptioussculptressseamlessseamstressseedlessseeressselflesssenselesssepsisserousservicesexlessshadelessshamelessshapelesssharpnesssheernessshiftlessshoelessshorelessshortnessshrewdnessshrillnessshynesssicknesssightlesssinlesssinussirelesssitusskewnessskinlessslacknesssleeknesssleeplesssleevelessslicknessslightnessslimnessslownessslumbrousslynesssmallnesssmartnesssmokelesssmoothnesssmugnesssnidenesssnugnesssoftnesssoillesssolacesolsticesolsticessongstresssorenesssoullesssoundlesssoundnesssournessspacelessspacioussparenesssparsenessspeciousspeechlessspinelessspinousspotlessspouselesssprynesssquarenesssquatnessstainlessstalenessstalklessstannousstarknessstarlessstasisstatelessstatusstaunchnesssteepnessstemlesssternnessstiffnessstillnessstoutnessstraightnessstrangenessstraplessstratusstrictnessstringlessstripelessstrumousstylelessstylusstypsissuavenesssukkothsulcussumptuoussunlesssurenesssurfacesurplicesurplussweetnessswiftnesssyphilistactlesstaillesstallnesstamelesstamenesstarsustartnesstastelesstaurustautnesstaxlesstearlesstemptresstennistensenesstermlessterracetersenesstexasthanklessthesisthetisthicknessthinnessthomasthoughtlessthriftlessthrombusthusthymustidelesstightnesstigresstigristimelesstimeoustintlesstirednesstirelesstitustonelesstonguelesstonustoothlesstoplesstortioustortoisetorustoughnesstracelesstracklesstractlesstraitresstreasonoustreelesstrellistrespasstrimnesstrismustritenesstroubloustruenesstrusstruthlesstubelesstunelesstyphusususelessvaguenessvainnessvalvelessvastnessvegasvenicevenousvenusverblessviciousviewlessvilenessvillousvinousvirusviscousviscusvoicednessvoicelessvoidnessvotelessvulguswagelesswaitresswalruswannesswarlesswavelessweaknesswealthlessweightlessweirdnesswetnesswheellesswhitenesswholenesswidenesswifelesswildnesswindlasswindlesswinglesswinlesswirelesswitlesswitnesswondrousWordlessworklessworthlesswoundlesswrongnesswrynessxmaszealous
adventurous, contagious, and indulgerous