Whats the Plural of Cliff: Understanding Regular Noun Pluralization

Cliff, Cliffs — See the Pattern

Look at these words. Can you see what happens?

• one cliff → two cliffs
• one roof → two roofs
• one chief → two chiefs
• one belief → two beliefs

Did you see the pattern? These words all end in -f, but they just add -s. They do NOT change to -ves. This is different from words like knife → knives or leaf → leaves.

Why Cliffs and Not Clives

You might know that many English words ending in -f change to -ves in the plural:

• knife → knives
• leaf → leaves
• wolf → wolves

But cliff does not follow this rule. It is one of the exceptions. The word “cliff” has a double -ff at the end, and words with double -ff almost always just add -s.

Easy way to remember: If the word has one -f (like knife, leaf, wolf), it usually changes to -ves. If the word has two -ff (like cliff, stiff, cuff), just add -s.

How to Use Cliffs in Everyday English

• The cliffs here are very high. (more than one cliff)
• We walked along the cliff and looked at the sea. (one cliff)
• Be careful near the cliffs — they are dangerous. (more than one)
• Birds build nests on the cliffs every spring. (more than one)
• She sat on the edge of the cliff and took a photo. (one cliff)

You are doing great. Now let’s look at the mistakes many learners make with this word.

The Most Common Mistake With Cliff

Even advanced learners sometimes write “clives” because they remember the -f → -ves rule for words like knife and leaf. If you have made this mistake, do not worry — you are not alone.

How to remember: Say “cliff” out loud. You can hear the double -ff sound at the end. Words with that strong -ff sound keep the -f and just add -s. Think: cliff → cliffs, like cuff → cuffs and stiff → stiffs.

Other -f words that just add -s: roof → roofs, chief → chiefs, belief → beliefs, proof → proofs.

Test Yourself: Cliff or Cliffs?

Choose the correct answer for each sentence. Click Check to see if you are right.

Keep Going — You Are Building Something

You just learned that cliff becomes cliffs — just add -s. That is one more plural you will never get wrong again.

But here is something interesting — the word roof also ends in -f. Most people say “roofs.” But is “rooves” also correct? And why do some people still use it? The answer is not as simple as you might think.

Next lesson: What Is the Plural of Roof?

Sources

Etymonline, cliff.