Correct

背时

/ bèishí / 
Strokes

Definition

outdated/out of luck

Example

As an Adjective

untimely; outdated; out of fashion

1
Bèishí
背时
fúzhuāng
服装

unfashionable dress

As an Adjective

unlucky; under an devil star

2
Zhèxiē
这些
tiān
天
wǒ
我
zhēn
真
bèishí
背时
  
。

I'm really unlucky these days.