kənˈsɛpʃənəl ˈfænsɪfəl ʌɪdɪˈeɪʃən(ə)l ɪˈmædʒɪn(ə)ɹi ɪˈmædʒɪˌnɛɹi ˈnəʊʃənəl ˈspɛkjuləˌtɪv being of the nature of a notion or concept a plan abstract and conceptional to improve notional comprehension a notional response to the question indulging in or influenced by fancy a fanciful mind all the notional vagaries of childhood not based on fact or investigation a notional figure of cost helps in determining production costs speculative knowledge not based on fact; existing only in the imagination the falsehood about some fanciful secret treaties a small child's imaginary friends to create a notional world for oneself