gemangelt

es mangelt

lacks

an nichts mangeln

want for nothing

es mangelt ihm an

he is a lack of

Daran mangelt es.

That is what is missing.

es mangelt an nichts

nothing is lacking

Daran mangelt es leider.

Unfortunately that is not the case.

denen es an nichts mangelt

who lack nothing

Es mangelt dir an Disziplin.

You lack discipline.