unfinisher
nounUK /ʌnˈfɪnɪʃə/
US /ʌnˈfɪnɪʃər/
A person who does not finish what they start.
He is an unfinisher who leaves every puzzle half done.
RELATED WORDS
OTHER MEANINGS
2. A tool or machine that leaves a surface without a final finish.
The old sander was an unfinisher, so the table stayed rough.
3. Something that spoils or undoes a final polish or coating.
That cheap wax is an unfinisher for wooden floors.
4. A person who never puts the last touches on a project.
As an unfinisher, she had ten almost-done paintings in her studio.