The plural is valleys.
Unlike nouns ending in -y (ally, spy), English nouns ending in -ay or -ey form regular S plurals.
Valleys is the plural form.
The plural form of quiz is quizzes.
The plural is a normal s plural, valleys.Words ending in a vowel and Y usually form normal plurals by adding S. It is only the words ending in consonant and Y that change the Y to IE and add S. The same applies to verb forms.Examples:monkey - monkeyscandy - candiesobey - obeysmarry - marries
The plural form for the noun index is indexes.
Plural of zero is zeroes.
The plural form of valley is valleys.
The plural form is valleys.
The plural form for the noun valley is valleys.
The plural for for buoy is buoys; the plural form for valley is valleys.
Valleys is the plural form of valley.
The plural form is valleys. The plural possessive is valleys'.
The plural form of him, her, or it is them. (objective pronouns)
Italy does not have a plural form.
Valleys is the plural form.
The plural form of beauty is beauties.
The plural form is spelt : subpoenas.
The plural form of quiz is quizzes.