Vitamin supplements can give a theoretical boost to health.
Synonyms and examplesabstractHappiness, faith, and confidence are abstract qualities.
conceptualThe introduction lays out a conceptual framework for the book.
notionalformalThere is a notional improvement in air quality that cannot be demonstrated.
Antonyms and examplesconcreteThere is no concrete evidence that ties him to the crime scene.
materialHer empire is built on vast material wealth.
physicalScientists study the physical world.
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Abstract ideashave no physical reality.Abstract artuses shapes, lines, and colour in a way that does not try to represent the appearance of people or things.