adjective
constructive
kuhn-STRUHK-tiv/kənˈstrʌktɪv/
Contributing to building or improving something.
The mentor offers constructive advice on improving the model bridge.

Etymology
The roots evoke building by piling things together. From having the quality of constructing, constructive came to describe contributions that help build something up or improve it.
In context
i've tried in the whole of this bill um to put forward amendments which i think are constructive and helpful and to improve the bill
More examples
- Constructive criticism helps me see how to improve my writing.
- We have a constructive discussion about sharing household chores.
- She plays a constructive role in rebuilding the neighborhood.
Forms
constructive · more constructive · most constructive
construct verb — To build or put something together.
constructively adverb — In a way that helps improve something.
Similar words
- helpful
- Emphasizes giving assistance, without necessarily improving what already exists.
- productive
- Emphasizes achieving useful results rather than suggesting specific improvements.