# fillup

> English word · Noun

## Definitions
1. An act or process of filling up; a replenishment.
2. Filler material.

## Etymology
From fill + up.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/fillup