Questions & Answers about Dobbiamo smetterla ora.
Smetterla is an idiomatic expression meaning:
- to stop it
- to cut it out
- to knock it off
It comes from smettere (to stop / to quit) plus the pronoun la.
As a whole, smetterla often means to stop doing that annoying, inappropriate, or ongoing thing. It is very common in spoken Italian.
For example:
- Smettila! = Stop it! / Cut it out!
- Dobbiamo smetterla. = We need to stop it / We have to cut it out.