In the following vocabulary question, choose the word which is opposite in meaning to the given word INTANGIBLE, especially in the sense of being not touchable or not physically real.

Introduction / Context:
This question tests your knowledge of antonyms, focusing on the word "intangible." In many contexts, "intangible" refers to things that cannot be touched or physically measured, such as feelings, ideas, or rights. You must select the option that directly contrasts with that meaning.

Given Data / Assumptions:

• Target word: INTANGIBLE.
• Options: ETHEREAL, CONCRETE, INSUBSTANTIAL, ABSTRACT.
• The main idea of "intangible" is that something is not material or touchable.

Concept / Approach:
"Intangible" signals lack of physical presence: you cannot touch or see it in a solid form. The opposite idea would be something that is solid, real, and touchable in the physical world. The word "concrete" in this list captures that sense, because it is used to describe things that are definite, physical, or real, in contrast to the abstract or intangible.

Step-by-Step Solution:
Step 1: Recall that "intangible" means not touchable, non material, or not able to be physically grasped. Step 2: Check each option for a meaning that strongly contrasts with this idea. Step 3: "CONCRETE" is often defined as real, solid, and existing in a physical form; it is used as the opposite of "abstract." Step 4: Notice that "ETHEREAL," "INSUBSTANTIAL," and "ABSTRACT" are all close to or even similar to "intangible" rather than opposite to it. Step 5: Choose "CONCRETE" as the correct antonym.

Verification / Alternative check:
You can pair the words in typical phrases: "intangible assets" such as goodwill or brand value do not exist physically, while "concrete assets" like buildings and machines are physically present. The other options are used to describe things that are delicate, not solid, or theoretical, which all align more with "intangible" rather than oppose it. This confirms that "CONCRETE" is the right choice.

Why Other Options Are Wrong:

• ETHEREAL: Means light, airy, or heavenly, often suggesting something not solid and thus closer to "intangible."
• INSUBSTANTIAL: Means lacking substance or strength, again supporting the idea of something not solid or tangible.
• ABSTRACT: Refers to ideas or concepts that are not concrete or physical, closely associated with intangibility.

Common Pitfalls:
A common error is to pick a word that simply "sounds" opposite without analysing its definition. Another mistake is to confuse "intangible" with "inexperienced" or "incomplete," which have different antonyms. When dealing with words about physical presence, always ask whether the opposite should be more physical and solid, which leads you straight to "concrete" here.

Final Answer:
The word that is opposite in meaning to INTANGIBLE is CONCRETE.