enunciate

ɪˈnʌnsɪeɪt

v.tr. 1 pronounce (words) clearly. 2 express (a proposition or theory) in definite terms. 3 proclaim. øøenunciation n. enunciative adj. enunciator n. [L enuntiare (as E-, nuntiare announce f. nuntius messenger)]

word used: enunciate

I can't understand what you're saying unless you enunciate your words clearly