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)
affected with madness or insanity
foolish; totally unsound
someone deranged and possibly dangerous
intensely enthusiastic about or preoccupied with
bizarre or fantastic
possessed by inordinate excitement
