capricious

adjective
1
showing sudden changes in attitude or behaviour
دمدمی مزاج, بی‌ثبات, هوس‌باز
synonym unpredictable
2
changing suddenly and quickly
بی‌ثبات, دمدمی, دمدمی مزاج, هوس‌باز, بوالهوس, غیرقابل پیش‌بینی, ناپایدار
a capricious climate
They had to contend with capricious economic forces.
synonym changeable