diminuendo
noun /dɪˌmɪnjuˈendəʊ/
  /dɪˌmɪnjuˈendəʊ/
 (plural diminuendos)
 [countable, uncountable] (from Italian, music)- a slow steady decrease in how loudly a piece of music is played or sung opposite crescendoTopics Musicc2Word OriginItalian, literally ‘diminishing’, from diminuire, from Latin deminuere ‘lessen’, from minuere ‘make small’.