filler
Filler (noun) means a substance used to fill a gap, crack, or hole. Example: “He smoothed wood filler into the crack before painting.”
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.
In music/TV/writing criticism, calling something "filler" implies it lacks real substance — a mildly negative judgment.
Word forms
- Plural
- fillers
Fill the gap
Can you complete this real example?
He smoothed wood _____ into the crack before painting.