Focus on the pronunciation of improvise
English definition of “improvise”
/ˈɪm·prəˌvɑɪz/ v [I/T]
› to invent or provide something at the time when it is needed without having already planned it: [T] We improvised a mattress from a pile of blankets. › music To improvise music or speech is to invent it while you are performing it: [I] Hughes encourages young actors to improvise during rehearsals.