speak up
[verb]
Synonyms: sound off, speak out

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Related Idioms: come out with it, have one's say, let one's voice be heard, make oneself heard, speak one's mind, stand up and be counted

[TahlilGaran] English Synonym Dictionary ▲

speak up phrasal verb (see also speak)

1. used to ask someone to speak louder:
Could you speak up, please?

2. to say something, especially to express your opinion:
There was a brief silence, then Gerald spoke up.

3. speak up for somebody to speak in support of someone:
He is willing to speak up for the rights of women.

[TahlilGaran] Dictionary of Contemporary English ▲

speak up
to express your opinion.
He went there to speak up for human rights, and he was arrested for doing it.

If you need help, you have to speak up or no one will know.

Etymology: based on the literal meaning of speak up (= to talk more loudly)

[TahlilGaran] English Idioms Dictionary ▲

speak up
to speak in a loud or clear voice
I asked the teacher to speak up as I could not hear him at all.

[TahlilGaran] English Idioms Dictionary ▲

speak up
{v.}
1. To speak in a loud or clear voice.
The trucker told the shy boy to speak up.

2. To speak in support of or against someone or something.
Willie spoke up for Dan as club president.

Ed spoke up against letting girls join the club.

[TahlilGaran] English Idioms Dictionary ▲