supplementary

supplementary is part of the Academic Word List. It is important for students in college and university.

[change] Adjective

Positive
supplementary

Comparative
more supplementary

Superlative
most supplementary

If something is supplementary, it is added on; it is not needed, but it is often useful.

Many immigrants are employed but also feel the need to seek supplementary income.

These software solutions are more supplementary than basic.