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noun Uncommon

filler

FIH-luh
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Filler (noun) means a substance used to fill a gap, crack, or hole. Example: “He smoothed wood filler into the crack before painting.”

noun
1
A substance used to fill a gap, crack, or hole.
"He smoothed wood filler into the crack before painting."
2
A cosmetic substance injected under the skin to smooth wrinkles or add volume.
"She had filler injected into her lips."
3
Content added mainly to take up space or time, rather than for its own value.
"Most of the album felt like filler, apart from two standout tracks."
"The newspaper ran a short filler piece about local weather."

How to use filler

Learner’s notes

In plain EnglishSomething added just to occupy space, whether it's a physical substance, a cosmetic injection, or low-value content.

Common mistake

In music/TV/writing criticism, calling something "filler" implies it lacks real substance — a mildly negative judgment.

Common pairings
dermal filler wood filler filler content filler episode
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Word forms

Plural
fillers
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Fill the gap

Can you complete this real example?

He smoothed wood _____ into the crack before painting.

Related words

Rhymes for filler

See all rhymes for filler →

Frequently asked questions

What does “filler” mean?
The word “filler” means a substance used to fill a gap, crack, or hole. In plain terms, something added just to occupy space, whether it's a physical substance, a cosmetic injection, or low-value content.
How do you pronounce “filler”?
“Filler” is pronounced FIH-luh (/ˈfɪlɚ/ in IPA).
How do you use “filler” in a sentence?
Here is “filler” used in a sentence: “He smoothed wood filler into the crack before painting.”
What part of speech is “filler”?
“Filler” is a noun.
Is “filler” a common word?
“Filler” is an uncommon word in modern English.
How many meanings does “filler” have?
“Filler” has 3 distinct senses listed in this dictionary. The most common is: a substance used to fill a gap, crack, or hole.

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