predominantly

predominantly

CEFR: C1-C2 /pre-dom-i-nant-ly/ [p.r.ih2.d.aa1.m.ah0.n.ah0.n.t.l.iy2]

"Predominantly" basically means "mostly" or the phrase "for the most part". For example:

Example Sentences:
An actor who is predominantly in films appears mostly in movies, but might sometimes do live theater or TV.
A neighborhood that is predominantly Indian has mostly Indian people living there, but maybe other groups too, in smaller numbers.
When the weather forecast says the day will be predominantly sunny, that means it will be mostly sunny.

Let's look at more example sentences using predominantly:

Example Sentences:
The speech was predominantly (meaning mainly, primarily, mostly) about tax cuts.
The light scattered down to the earth at a large angle with respect to the direction of the sun's light is predominantly in the blue end of the spectrum.
Evidence indicates that people have always been predominantly right-handed.
An Aurora, a natural light display in the sky seen predominantly in the high latitudes, is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in Earth's atmosphere.

Note:

The adverb dominantly doesn't mean "mostly".