Questions & Answers about Mowa jest jasna.
Mowa is a noun, not a verb. It most often means speech, spoken language, or way of speaking, depending on context.
So in this sentence, mowa is the thing being described as jasna.
It is different from:
- mówić = to speak
- mowa o... = it is about... / we are talking about... (a fixed expression)
Jest means is. It is the 3rd person singular form of być (to be).
So the structure is:
- mowa = subject
- jest = is
- jasna = adjective describing the subject
This is the normal way to say X is Y in Polish:
- Książka jest ciekawa. = The book is interesting.
- Herbata jest gorąca. = The tea is hot.
In normal standard Polish, Mowa jest jasna is the full and natural sentence.
You may sometimes see Mowa jasna in:
- headlines
- poetry
- slogans
- very compressed style
But for a learner, it is best to treat jest as required in ordinary sentences like this.