Он отмахнулся от проблемы как от пустяка и мелочи.
Definitions
Both 'bagatelle' and 'trifle' refer to something of little value or importance. 'Bagatelle' can also denote a short, light piece of music or a game played with balls and a cue, while 'trifle' often implies a minor detail or a dessert made with layers of cake, cream, and fruit.
