TUNE-UP Meaning of TUNE-UP in English tune-up BrE AmE ˈtjuːn ʌp ⇨ˈtʃuːn- AmE \ ˈtuːn- ˈtjuːn- ▷ tune-up|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012