Inadequately

Japanese literature, in spite of its beauty and riches, is as yet inadequately known in the West.

We are wandering through inadequately mapped territory.

Low-cost community schools attempt to fill the gap, but most of these educators are inadequately trained—so one organization is now teaching the teachers.

The two former managers face four new charges, including conspiracy and misconduct in office, for their roles in the crisis, in which inadequately treated water from a local river corroded residential pipes carrying water to an estimated 100,000 people.

Open carriages tend to be draughty and inadequately heated. The passenger in them has no escape from the annoyance of squalling babies, boisterous drunks, and riotous teddy-boys, who may be at the far end of the coach but whose din cannot be shut out.