Learn Dutch: Zijn woordenschat wordt steeds groter. - His vocabulary is becoming bigger and bigger.

While steeds often means "always," combining it with a comparative adjective like groter changes the meaning to "increasingly" or a continuing trend. Therefore, steeds groter is the natural Dutch way to express "bigger and bigger."

Why is the simple present tense wordt used instead of a continuous form for "is becoming"?

The verb worden (to become) inherently describes a process. Even though English uses the continuous form "is becoming," Dutch prefers the simple present wordt for gradual changes. A continuous construction like is aan het worden would sound unnatural here.

What are the parts that make up the word woordenschat?

It is a compound of woorden (words) and schat (treasure). Literally meaning a "treasure of words," it is the standard and most common Dutch term for "vocabulary."

Why does groter only have one "o" when the base adjective is groot?

This is due to Dutch spelling rules regarding open and closed syllables. When you add the comparative -er ending to groot, the word splits into syllables as gro-ter. Because the "o" is now at the end of a syllable (an open syllable), a single "o" is enough to maintain the long vowel sound.