What is the plural of leaf?

The plural of leaf is leaves. The word leaf is considered an irregular plural noun because it does not follow the typical rules for forming plural nouns in English. Instead of adding an -s or -es to the end of the word, the vowel in the word changes from -f to -v and then -es is added to make it plural. This irregularity can be confusing for language learners, but with practice, it can be easily mastered.