fluency
n. uncountablen. the ability to speak or write a language easily and well. It means you can express your ideas smoothly without having to stop and think too much.
n. the quality of being able to speak or write a language easily, smoothly, and with little effort. Refers to the flow and speed of language production rather than perfect grammatical accuracy.
She reached a high level of fluency in Spanish after living in Madrid.
While his grammar is not perfect, his fluency allows him to participate in complex business negotiations without a translator.
True linguistic fluency involves not just a large vocabulary, but the ability to use idiomatic expressions and appropriate registers naturally in a variety of social contexts.
Often paired with the preposition 'in' when referring to a specific language.
He has a great fluencyHe has great fluencyFluency is uncountable when referring to the general ability; it should not be used with the indefinite article 'a'.