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English definition of “speak up”

speak up

(TALK LOUD) phrasal verb with speak    /spik/ verb (past tense spoke  /spoʊk/, past participle spoken  /ˈspoʊ·kən/)
to speak louder: Speak up! We can’t hear you in the back.
(Definition of speak up (TALK LOUD) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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