You are looking for "serenity".
The abstract noun forms for the adjective serene are sereneness and serenity.
The abstract noun for the word "serene" is "serenity." It refers to a state of being calm, peaceful, and untroubled. Serenity embodies the quality of tranquility and the absence of disturbance or agitation.
The abstract noun form for the adjective suspicious is suspiciousness.A related abstract noun form is suspicion.
The abstract noun form of the adjective terrible is terribleness.A related abstract noun form is terror.
The abstract noun form of the adjective 'tenacious' is tenaciousness.A related abstract noun form is tenacity.
The abstract noun forms for the adjective serene are sereneness and serenity.
The abstract noun form is tourism.
The abstract noun form of the adjective unique is uniqueness.
The abstract noun form of the concrete noun 'thief' is thievery.The abstract noun form of the concrete noun 'infant' is infancy.The abstract noun form of the concrete noun 'coward' is cowardice.The abstract noun form of the adjective 'urgent' is urgency.
The abstract noun form of the concrete noun friend is friendship. The abstract noun form of the verb to serve is service. The abstract noun form of the adjective weary is weariness. The abstract noun form of the concrete noun child is childhood.,
The abstract noun form of the concrete noun 'women' is womanhood.
The abstract noun form for the adjective truthful is truthfulness.The word 'truthful' is the adjective form of the abstract noun truth.
The abstract noun form of the adjective 'legal' is legality.A related abstract noun form is the informal noun legalese.
The abstract noun form of the adjective 'attentive' is attentiveness.A related abstract noun form is attention.
The abstract noun form of the adjective 'polite' is politeness.
The abstract noun form for the adjective suspicious is suspiciousness.A related abstract noun form is suspicion.
The abstract noun form of the adjective terrible is terribleness.A related abstract noun form is terror.