not having some parts, or not finished

The decision was based on incomplete or inaccurate information. 该决定是基于不全面或不准确的信息作出的。

The building is still incomplete. 这座建筑物尚未完工。

a mark, usually temporary, received when some of the work for a class has not been finished

He failed to hand in his term paper, so he got an incomplete for the course. 他没能交学期论文，所以这门课被记为未完成。