There is no adjective form for the noun breadth, the distance or measurement from side to side of something; width. The closest you can come is to describe a noun as wide, a wide road, a wide load, but wide is only a general description, not a measurement or specific distance across.
The abstract noun form of the adjective unique is uniqueness.
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 'polite' is politeness.
The abstract noun form of the adjective triumphant is triumph.
The word 'delightful' is the adjective form of the abstract noun delight.The abstract noun form of the adjective 'delightful' is delightfulnerss.
The abstract noun form of the adjective unique is uniqueness.
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 'polite' is politeness.
The abstract noun form of the adjective triumphant is triumph.
The abstract noun form of the adjective 'famous' is famousness.The word 'famous' is the adjective form of the abstract noun fame.
The word 'delightful' is the adjective form of the abstract noun delight.The abstract noun form of the adjective 'delightful' is delightfulnerss.
The abstract noun form of the adjective 'useful' is usefulness.The word 'useful' is the adjective form of the abstract noun use.
The abstract noun form of the adjective 'opinionated' is opinionatedness.The word 'opinionated' is the adjective form of the abstract noun opinion.
The abstract noun form of the adjective 'indifferent' is indifference.
The abstract noun form of the adjective/adverb 'cowardly' is cowardliness.A related abstract noun form is cowardice.
The abstract noun form of the adjective 'lovely' is loveliness.The word 'lovely' is the adjective form of the abstract noun love.
The abstract noun form of the adjective 'helpless' is helplessness.The word 'helpless' is the adjective form of the abstract noun help.