Cognizability is the ability to be understood, recognized, or known. Its antonyms are terms that refer to things that are hard to grasp, unknown, or indistinct. Words like unintelligibility, obscurity, ambiguity, and unfamiliarity are the opposite of cognizability. People may encounter these antonyms when dealing with complex concepts, abstract ideas, or highly technical subjects that are difficult to comprehend. Without clarity and meaningful explanations, these ideas might seem obscure or unintelligible to someone. Hence, it's essential to use plain language, clear definitions, and well-structured arguments when trying to explain things that might challenge someone's cognitive abilities.