To express having zero options or "not any" of something, Italian uses the negative adjective nessuno. When placed before a noun, its ending changes to match the noun's gender and starting letters.
If you know how to use the indefinite articles (un, uno, una, un'), you already know how to use the forms of nessuno! Also, notice that Italian embraces the double negative: you will typically use non before the verb along with the negative adjective.
Masculine Nouns: Nessun and Nessuno
For most masculine nouns—whether they start with a regular consonant or a vowel—use nessun (following the exact same rule as un).
However, if a masculine noun starts with s + consonant (like spreco or scampo), z, gn, or ps, you must use nessuno (just like uno).
Feminine Nouns: Nessuna and Nessun'
For feminine nouns starting with a consonant, use nessuna (just like una).
Here is a sentence contrasting the feminine nessuna with the masculine nessuno:
Finally, if a feminine noun starts with a vowel, drop the final -a and add an apostrophe to make nessun' (just like un'). Remember, this apostrophe is only used with feminine nouns!
