Question

ضدحال زدن/ حال یک جمعی‌ رو با گفتن چیزی بیخود خراب کردن

Answer 1

Hi

to act as a ... (یکی از گزینه‌های زیر) 

wet blanket

http://www.oxforddictionaries.com/definition/english/wet-blanket#wet-blanket__3

killjoy

http://www.oxforddictionaries.com/definition/english/killjoy?q=kill+joy

spoilsport

http://www.oxforddictionaries.com/definition/english/spoilsport#spoilsport__3

party pooper

http://www.oxforddictionaries.com/definition/english/party-pooper#party-pooper__3

 

Comments

Very good +

Answer 2

buzzkill

http://goo.gl/OrexM

http://goo.gl/DBjc6t

http://www.englishlearner.ir/index-p005.html

Answer 3

kick in the teeth

If you describe the way someone treats you as a kick in the teeth, you mean that they treat you badly and unfairly, especially at a time when you need their support

She was dismissed from her job, which was a real kick in the teeth after all the work she'd done.

 

To disillusion:

to disappoint someone by telling them the unpleasant truth about something or someone that they had a good opinion of, or respected

I hate to/I'm sorry to disillusion you, but pregnancy is not always wonderful - I was sick every day for six months.