The abstract noun form of the adjective 'useful' is usefulness.
The word 'useful' is the adjective form of the abstract noun use.
Abstract nouns can be singular and plural, or uncountable.Examples of countable abstract nouns are:belief, beliefshope, hopesidea, ideasmemory, memoriessecret, secretsyear, yearsExamples of uncountable abstract nouns are:chemistryeducationharmknowledgesoccerweather
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Abstract nouns:educationtroubleConcrete nouns: elevatortree
Some abstract nouns with M and A are:ambiguityanimositycamaraderiedemocracydramagrammarimaginationlimitationmagicmanners
Both love and hate are abstract nouns.
Some abstract nouns that end with the suffix 'dom' are:freedomwisdomboredomstardomSome abstract nouns that end with the suffix 'ship' are: friendshiprelationshipworshipcitizenship
Abstract nouns are sometimes called 'special nouns' or 'idea nouns'.
Idea nouns are abstract nouns, names for specific persons, places, things, or titles. Examples:agonybargaincheerdogmaeducationfungratitudehopeignorancejoyknowledgelovemadnessnatureorganizationpityquestionragestrengthtrust
Examples of abstract nouns that start with D are:dangerdaredestinydignitydiplomacydismissaldoomdramadreaddreamdrudgeryduty
The abstract nouns for these concrete nouns are:motherhoodpriesthoodfriendship
Examples of abstract nouns that begin with the letter 'u' are:ubiquityuglinessunderstandingunityunhappinessupheavalurgencyuseusefulnessusury
Some abstract nouns starting with M are:majoritymaladymarriagememorymercymomentMondaymoodmurdermystery