Synonyms and Antonyms for Groundless

Following is a list of 200 synonym words and phrases that are related to groundless:

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4 Letter Words

idlebase

5 Letter Words

falseunduemeritbasispiousbogussillyinaneblank

6 Letter Words

untrueflawedflimsyabsurdwhollyunjust

7 Letter Words

invalidunsoundfoundedbedrockfatuousimpiousslandersophismhearsayfalsityallayedasininepuerileunbased

8 Letter Words

baselessunprovenunproveddelusivespeciouschildishfancifulpatentlycontrarypretextssophismscaptiousnugatoryentirelyslandersspuriousnonsensepremisedlibelousalarmistdisprovedelusoryformlessnounless

9 Letter Words

unfoundeduntenableincorrectmisplacedfrivolousrationalemeritlessvexatiousillogicalludicrousoverblownerroneousdisprovedcauselessinsinceredispelledlibellousfalsehoodrefutablefactuallydisprovenobjectionjustifiedimposturelaughableassertionimprudenttruthlessunsourceddismissedfact-freelogiclessfieldlessmountlessgravelessunknowing

10 Letter Words

ungroundedunprovokedirrationalgratuitousfoundationaccusationallegationunprovableslanderousunreasonedfallaciousconclusoryridiculouscalumniousoutlandishconjecturefactitiousscurrilousassertionsfarfetcheddogmaticalnonfactualsuspicionsreproachesuntestablesourcelessbelieflessobjectlessfigurelesstheorylessstancelessmotiveless

11 Letter Words

unwarrantedunsupportedill-foundedunjustifiedunnecessarysuppositionaccusationsnonsensicalallegationssophisticaltendentiouspresumptionimpertinentmeaninglessconjecturesunreasoningunscholarlyunpracticalinexpedientjustifiablesophistriesimplausibleinsinuationprejudicialtreasonableimputationspurportlessunevidencedconceptlessoutlineless

12 Letter Words

unreasonableindefensiblewell-foundedsuppositionspreposterousinsinuationsunscientificunverifiablepresumptuousinconsequentunpersuasivepresumptionsunhistoricalspeculationsinexpediencyexaggerativecontemptiblepsychologismevidencelessungroundable

13 Letter Words

unjustifiablesubstantiatedunsupportableinsupportableunmeritoriousunsubstantialunwarrantableasseverationsunwarrantedlysubstancelessunconfirmableexaggerationsapprehensionscontrovertingsuppositionalpsychologicalknowledgeless

14 Letter Words

substantiationunconstructiveindemonstrableundemonstratedsubjectivisticfoundationlessunsubstantiate

15 Letter Words

unsubstantiatedunphilosophicalinformationless

Using this list of similar-meaning words, you can choose the best synonyms to replace groundless in your sentences.

Additionally, you'll find antonyms included, perfect for when you need the complete opposite meaning of groundless in your writing.