The antonym for the noun 'bravery' is cowardice, an abstract noun.
The antonym for the abstract noun 'cruelty' is kindness; also an abstract noun.
abstract (or, in case you mean the material "concrete", it could be wood ;-)
block, harm, hinder, hurt, injure, obstruct, stop,
To obstruct is to get in the way of, or stop something. An obstructionist is a person who is trying to obstruct something. An obstructionist stance is a position intended to obstruct.
Tenacious is not an antonym for abstract.
Deplete, drain, empty, exhaust, spend, take, use, void.
abstract, abstractionist, nonfigurative, nonobjective
The antonym for the noun 'bravery' is cowardice, an abstract noun.
If you mean "abstract," it's "concrete."
One antonym for abstract is concrete.Answer:actual, factual, material, objective, physical, real
The antonym for the abstract noun 'cruelty' is kindness; also an abstract noun.
actual, real, concrete, factual, material, objective, physical
abstract (or, in case you mean the material "concrete", it could be wood ;-)
block, harm, hinder, hurt, injure, obstruct, stop,
To deceive or to betray. For example, instead of helping his friend get past the wolves in the forest, he betrayed him and went off inside the cabin instead.
The antonym of physics is metaphysics. Metaphysics deals with abstract concepts like existence, reality, and being, whereas physics deals with the study of energy, matter, and their interactions in the physical world.