noun
filler
FIH-luh
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 notesIn 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
Word Forms
fillers plural, Fillers plural
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Fill the Gap
Can you complete this real example?
He smoothed wood _____ into the crack before painting.