De or het word-document?

The correct Dutch article is:

het word-document

Rule Words ending in -ment: usually het. See the rule

This word is not in the word lists we use to double-check answers.

How to use word-document

the word-documenthet word-document
this word-documentdit word-document
that word-documentdat word-document
our word-documentons word-document
your word-documentjouw word-document
every word-documentelk word-document
which word-document?welk word-document?
a big word-document / the big word-documenteen groot word-document, het grote word-document