Learn Italian: Il pittore esprime una sensibilità meravigliosa. - The painter expresses a wonderful sensitivity.

Nouns ending in an accented vowel, like sensibilità, are invariable. This means their spelling doesn't change in the plural. To say "wonderful sensitivities", you only change the article and the adjective, while the noun stays exactly the same: le sensibilità meravigliose.

How do I know the gender of sensibilità?

Almost all Italian nouns ending in -tà (like città, università, or sensibilità) are feminine. Because it is feminine, it uses the article una and the adjective takes the feminine ending -a to become meravigliosa.

What is the infinitive of esprime and is it a regular verb?

The infinitive is esprimere (to express). In the present tense, it follows the regular -ere pattern, which gives us esprime for "he/she/it expresses". However, as a quick reminder for your past tenses, its past participle is irregular: espresso.

Could I put the adjective before the noun and say una meravigliosa sensibilità?

Yes, you can! Placing a descriptive adjective like meravigliosa after the noun is the standard, neutral way to state a fact. Moving it before the noun is also correct but adds a more poetic, subjective, or emotional emphasis to how wonderful the sensitivity is.