Sentence-initial causal clauses (cum)

Setting the Stage with "Cum"

You likely already know the word cum as the question word for "how." However, cum has another very common job: it can mean "since" or "seeing as."

since (causal)
cum

When placed at the very beginning of a sentence, cum introduces a causal clause. This lets you establish the circumstances or reasons upfront, before delivering the main point of your sentence.

Since the weather is worsening, it is important to stay inside.
Cum vremea se înrăutățește, e important să rămânem înăuntru.

Structure and Punctuation

Whenever you start a sentence with a cum clause, the explanation comes first. Because this introductory clause sets the stage, you must always separate it from the main clause with a comma.

Since he had lost his glasses, he suspended the project temporarily.
Cum își pierduse ochelarii, el a suspendat proiectul temporar.
Since we have the certainty of the profit, we are increasing the budget.
Cum avem certitudinea profitului, majorăm bugetul.

Explaining Decisions and Consequences

Using cum at the start of a sentence is a great way to sound natural and structured. It is particularly useful in formal, professional, or administrative situations where you need to explain why a decision was made or why a consequence is occurring.

Since the conflict got worse, we suspended the flights temporarily.
Cum conflictul s-a agravat, am suspendat zborurile temporar.
Since the deficit increased because of his negligence, they are increasing the tax.
Cum deficitul a crescut din cauza neglijenței lui, ei majorează impozitul.
Since the deficit accumulates, it is hard to save the money.
Cum deficitul se acumulează, e greu să economisim banii.