1 express disapproval of or a wish against; deplore (deprecate hasty action).
Usage:
Often confused with depreciate.
2 plead earnestly against.
3 archaic pray against.
Derivatives:
deprecatingly adv. deprecation n. deprecative adj. deprecator n. deprecatory adj.
Etymology: L deprecari (as DE-, precari pray)
Useful english dictionary. 2012.