The 16:30 train has been cancelled.
sop-PRES-so — stress on second syllable, double 's'. Past participle of 'sopprimere'.
When you see this on the departure board or hear it announced over the speaker system.
'Soppresso' (suppressed/cancelled) is the Italian railway term for a cancelled service. It is distinct from 'cancellato' (cancelled in general contexts) — 'soppresso' is the technical railway term. Understanding this avoids waiting on the platform for a train that is not coming.
Il treno è soppresso — cosa devo fare?
The train is cancelled — what should I do?
Go to the ticket office for alternatives
Il treno è deviato — ferma anche a Firenze?
The train is rerouted — does it still stop at Florence?
'Deviato' means rerouted, not the normal path
Il treno è limitato a Bologna — non arriva a Roma.
The train terminates at Bologna — it does not reach Rome.
'Limitato' means it stops short of the final destination
When a train is 'soppresso', Trenitalia is obligated to offer passengers the choice of refund or rebooking on the next available service. If the delay to the final destination exceeds 60 minutes due to cancellation, passengers are entitled to partial compensation under EU Regulation 1371/2007.