Meaning of CONSTRUCTIVE in English
[adjective] - (esp. of advice and criticism and also actions) useful and intended to help or improve somethingShe criticised my writing but in a way that was very constructive - I learned a lot from her.If you don't have anything constructive to say I'd rather you kept quiet.He didn't offer any constructive criticism - just complained he didn't like it.
Cambridge English vocab. Кембриджский английский словарь. 2012