deal somebody/something a blow
deal (someone or something) a blow
To adversely effect or detract from someone or something. Getting a bad grade in my favorite subject really dealt my self-confidence a blow. Despite the company's recent success, the massive recall dealt it quite a blow.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
deal somebody/something a ˈblow,
deal a blow to somebody/somethingbe a shock for somebody; make something fail, etc: The death of her father dealt her a terrible blow. ♢ Losing his job dealt a blow to his hopes of buying his own house.
Farlex Partner Idioms Dictionary © Farlex 2017