in- + complete

source: marge simpson puzzle GIF - Find & Share on GIPHY

not having all the necessary or appropriate parts:

不完全な, 不十分な, 不備な, 未完成の

e.g. the records are patchy and incomplete.

not full or finished:

e.g. the analysis remains incomplete.

incompleteness |ˌinkəmˈplētnəs| noun

late Middle English: from late Latin incompletus, from Latin in- ‘not’ + completus ‘filled, finished’ (see complete).