Grammar fix
That sucks.
show sympathy
A very informal way to show that you feel bad about someone's difficult or disappointing experience.
expression
How oftenCommon
LevelB1
Used inMostly spoken
Hear it in context
Notice where the phrase sounds natural.
You lost your wallet on the way home? That sucks.
My friends are pretty casual, so if I tell them about a bad day they'll just say 'That sucks' and buy me a drink, which honestly helps.
Fix the pattern
One small grammar move makes it sound right.
Not: That's suck.
Say: That sucks.
Use 'sucks' after 'that' in this expression; do not use the base form 'suck'.
Don't confuse it
Other ways to say it
Show sympathy for someone's bad news
How formal?Very casualPolite
That sucks.You're here · Very informal sympathy, especially between friends.
that's roughCasual sympathy for someone's difficult experience.I'm sorry to hear that.A polite, widely suitable response to someone's bad news.