Meaning of CONSTRUCTIVE in English
adj.1 a of construction; tending to construct. b tending to form a basis for ideas (constructive criticism).
2 helpful, positive (a constructive approach).
3 derived by inference; not expressed (constructive permission).
4 belonging to the structure of a building.
constructively adv. constructiveness n.
Etymology: LL constructivus (as construct)
Oxford English vocab. Оксфордский английский словарь. 2012