Sparse

It makes things easier if your matrix is sparse.

But rain has been sparse in Tanzania, as it has in neighboring East African nations, and meteorologists are warning of a prolonged dry season.

Trees became sparse.

If I wanted to learn Sumerian I would download a textbook or two, work my way through it, and also find university resources on the language, such as dictionaries and grammars hosted by universities. For a lot of dead languages, universities and university-quality scholarly websites host a ton of resources. Sumerian will be more sparse than Latin or Greek, maybe even than Old English, but I can't imagine there are no good free resources hosted by universities.

With sparse exceptions, drug trafficking gangs tend to align politically with the right.

Kalman was walking in the sparse woods.

His hair is sparse.

a sparse array, index, or matrix

The Leicester to Grimsby service will become hourly throughout (with some extensions to Cleethorpes as at present), while a new hourly Peterborough to Doncaster service via Spalding, Sleaford and Lincoln will join up two routes with a sparse service at present.

They began properly to ſparſe pretye rumours in the North, that no man ſhulde eate whyte breade, no man eate pygge, gooſe, or capon, without he agreed before with the kynge.