adjective

having power and influence over others.

they are now in an even more dominant position in the market

presiding,ruling,governing,controlling,commanding,ascendant,supreme,authoritative,most influential,most powerful,superior,prepotent,prepollent,assertive,self-assured,self-possessed,forceful,domineering,bullish,feisty,not backward in coming forward,pushy,pushful

noun

a dominant trait or gene.

this disorder is inherited as a dominant