The sentence "The cautious the barked nasty at man poodle," would be difficult for an English speaker to understand because the structure violates the rules of

The answer is: syntax

Syntax is the organization of words and phrases to produce well-formed sentences in a language. In this case, the arrangement of words is incorrect mainly because in English syntax rules do not allow the definite article the to precede a single adjective like cautious or a verb, such as barked. Finally, adjectives must come before nouns; for example, man.