Tenacious is not an antonym for abstract.
abstract, abstractionist, nonfigurative, nonobjective
One antonym for abstract is concrete.Answer:actual, factual, material, objective, physical, real
Antonym for permanent: Temporary Antonym for abundant: Scarce
yes clever is antonym and it's antonym is stupid, fool
Tenacious is not an antonym for abstract.
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.
abstract (or, in case you mean the material "concrete", it could be wood ;-)
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.
That just doesn't make sense. You can have an antonym for an adjective (the antonym of quick is slow), for an adverb (the antonym of quickly is slowly), and for certain verbs (sleep/wake, speak/shut up, etc.), certain abstract nouns (love/hate - also used as verbs) but it simply doesn't make sense to talk about antonyms of nouns which represent objects.
It means to be on time or doing something at a previously agreed time
I don't think there is one. An analogy is a special kind of abstract relationship. An antonym, or opposite, means something at the farthest possible extreme away--something at the opposite end of the continuum. But something either is an analogy or is not (and that may even be a matter of interpretation or opinion). There is no meaning to the idea of being the farthest possible thing from an analogy.
Some antonyms for physical properties are abstract properties, immaterial properties, or conceptual properties. These terms describe characteristics that are not related to the physical attributes of an object or substance.