Technically, "completely" does not have any comparative form, because it is absolute and does not admit of degrees. Formally, "more completely" would be a suitable comparative, but for the reason already given does not make sense.
Missing is an absolute adjective and doesn't have a comparative form.
External is an absolute. There cannot be comparative or superlative forms.
Never is an absolute or non gradable adverb; there is no comparative form.
absolute advantage is when a country,company, indivdual or region can produce a good better and at a cheaper cost than any other competitor.
The comparative - "upper"; I can't think of any superlative.
There are many similarities and differences between Comparative Advantage and Absolute Advantage. Some simple differences between the two would be, comparative advantage uses the driving force of specialization. Another thing of comparative are, if one country has an absolute advantage or disadvantage in any kind of output, any of the other countries will maybe profit from majoring in and distributing those products. Absolute advantage has a country that economically has a benefit over another, in a precise moral, when it produces that moral at a lower cost. Also a country using the same contribution of properties a country with an absolute advantage will have superior productivity. A few modest similarities between comparative and absolute advantage are, both of these terms are two basic concepts to international trade. Additional details would be the two terms both produce a product more efficiently which gives them an absolute advantage.
absolute adjectives
The nouns for the adjective false are falseness and falsehood.
Absolute Advantage
no
For adjectives of three syllables or more, put "more" in front of them for the comparative and "most" for the superlative.