not brought to the desired final state
"The artist left the sculpture unfinished, so it still lacked its polished details."
not brought to an end or conclusion
"unfinished business"
"the building is still unfinished"
Not finished, not completed.
"The artist left the painting unfinished on the easel before stepping out for lunch."
In plain English: Unfinished means something that has not been completed yet and still needs more work to be done.
"The story ends with an unfinished chapter that no one has written yet."
The word unfinished is formed by adding the prefix un- to finished. This construction simply means not having been completed yet.