They may even add the word riff to their vocabulary.

Before long a "difficult word" is added to his vocabulary: "prosthesis."

Further, he had added three words to his vocabulary.

English has been changing for centuries, adding new words to its vocabulary.

"Only took you four years and some to add that word to your vocabulary", Duvalier observed.

It may add a new dimension to your vocabulary, mate.

Also, wetwebwork, I'm going to add eyetacks to my daily vocabulary.

Eric loves to read, and to add polysyllabic words to his vocabulary.

But Lang himself can add to his house's vocabulary.

We expect the kelp to add a visual display to its vocabulary at the next stage of development.