She went on to say that now, as he approached his second birthday, his vocabulary had expanded to include "Daddy" and "Mommy."

Dor's vocabulary was expanding rapidly today!

His vocabulary had expanded again since they had last been together.

Her vocabulary expanded swiftly, and the two of them chatted late every night, sitting side by side on the straw pallet.

My own vocabulary had expanded by the addition of the words for "water," "fire," "food," and "Help!"

Hospital staff observed she would frequently say "No" but not actually mean it, which she continued to do for some time even after her vocabulary expanded.

The vocabulary expanded but remained limited, albeit used with imaginative variety.

The idea that your palate and your vocabulary expand simultaneously might sound felicitous, but there is a catch.

I must say my vocabulary is expanding rapidly!

She has a habit of randomly inserting "meow" into her words and sentences, although her vocabulary expanded considerably during the series.