groundless What is the Definition of groundless?Adjective:without a basis in reason or fact Other meanings of groundless (synonyms, cognates). ENRU groundless беспричинный Frequently viewed: backup meaningdefinition of machineimpact meaningdefinition of glassmainly meaningquorum meaningdefinition of disagreemerge meaningaction meaningdefinition of lifemeantime meaningdefinition of sketch A B C D E F G H I J K L M N O P Q R S T U V W X Y Z