Word family noun prediction predictability ≠ unpredictability predictor adjective predictable ≠ unpredictable predictive verb predict adverb predictably ≠ unpredictably
From Longman Dictionary of Contemporary Englishunpredictableun‧pre‧dict‧a‧ble /ˌʌnprɪˈdɪktəbəl◂/ ●○○ AWL adjective 1 PREDICT#changing a lot so it is impossible to know what will happen unpredictable weather the unpredictable nature of language2 PREDICT#someone who is unpredictable tends to change their behaviour or ideas suddenly, so that you never know what they are going to do or think —unpredictably adverb —unpredictability /ˌʌnprɪdɪktəˈbɪləti/ noun [uncountable]Examples from the Corpus
unpredictable• The situation in the region's poorest country remains volatile and highly unpredictable.• At the other end of the table, the finishing order is unpredictable.• It is that constant and that unpredictable.• Long drawn out and unpredictable as the process may be, it has one great advantage for the policy-maker.• The hours were long and unpredictable compared with the brisk efficiency of the House.• Mayoral elections are usually unpredictable, highly dependent on the particular appeal of personalities and the ability to form coalitions.• Mark Waite of Sugarlands, Texas, does commercial litigation, which is the most grueling and unpredictable legal work.• Creatures born in the rugged environments of arctic climes must deal with the unpredictable variations that nature is always throwing at them.• Britain is well known for its unpredictable weather.• A human being is unpredictable whether he is a national resident or a migrant: we have to live with that. 