Genius As An Adjective. On the other hand, the word ingenious is used as an adjective. Included below are past participle and present participle forms for the verb genialize which may be used as adjectives within certain contexts.
Adjective modifiers, also called intensifiers, are words which are placed before adjectives to give additional detail and emphasis to them. They usually answer questions that someone might have about the noun, such as This is the most typical way to use an adjective. Lets learn more about adjectives in this video!
While ingenious is fairly common, ingenuous isn't used as much in writing or speech these days.
However, this use of genius as an adjective is done in the informal language.
Adjectives are descriptive words that modify nouns. This usage of 'genius' as an adjective is relatively new and would still be considered by many (including me) as slang. One source of confusion is the prefix in-, which often negates.