of or associated with or requiring the use of the mind
an integer or a fraction
capable of being expressed as a quotient of integers
consistent with or based on or using reason
having its source in or being guided by the intellect (as distinguished from experience or emotion)
uneducated in general; lacking knowledge or sophistication
unaware because of a lack of relevant information or knowledge
uneducated in the fundamentals of a given art or branch of learning; lacking knowledge of a specific field