Half-done

He got tired of the work, and left it half-done.

This work is half-done.

Don't leave your work half-done.

Half-done work is not his style.

He leaves his homework half-done.

You'll not be leavin' my jobsite when the job's but half-done!

Near-synonyms: medium rare, medium; undercooked

You'll not be servin' me meat that's but half-done!