The word 'impress' is not an adjective. The word 'impress' is a verb and a noun.
The noun 'impress' is a concrete noun as a word for a mark made by pressure.
The abstract noun form of the verb to impress is impression as a word for an effect, feeling, or image retained as a consequence of experience.
The noun impression is also a concrete noun as a word for a physical mark left by one object exerting pressure on another.
The abstract noun form of the adjective 'indifferent' is indifference.
The noun form of the adjective impressive is impressiveness.
The abstract noun of the adjective "blue" is "blueness."
The abstract nouns for the adjective free are freenessand freedom.
The abstract noun form of the adjective brave are braveness.A related abstract noun is bravery.
The abstract noun form of the adjective 'indifferent' is indifference.
The noun form of the adjective impressive is impressiveness.
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 'famous' is famousness.The word 'famous' is the adjective form of the abstract noun fame.
The abstract noun for the adjective quick is quickness.
The abstract noun of the adjective "shy" is "shyness."
The abstract noun of the adjective "blue" is "blueness."
The abstract noun form of the adjective triumphant is triumph.
The abstract nouns for the adjective free are freenessand freedom.
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.