A Princípio vs. Em Princípio: Two Portuguese Phrases That Differ
These similar phrases point to different ideas: an initial moment versus a general principle or expectation.
Real Life Portuguese · 5 min read · Updated October 14, 2026
The short answer
A princípio usually means “at first” or “initially.” It introduces an early impression or situation that may later change.
Use a princípio for what happened at first
The phrase often appears with contrast words such as mas (but) or depois (later), because the speaker is describing how the situation developed.
A princípio, achei o exercício difícil, mas depois gostei.
At first, I thought the exercise was difficult, but I liked it later.
A princípio, o plano parecia simples.
At first, the plan seemed simple.
A princípio, ela não queria viajar; depois mudou de ideia.
Initially, she didn’t want to travel; later, she changed her mind.
Use em princípio for a general rule or expectation
Em princípio often means “in principle,” “generally,” or “as things stand.” It signals a general expectation, while leaving room for an exception or a later detail.
For example, a person might say a store is open em princípio, then explain that a holiday schedule could change the hours. The phrase is not about the first moment in a timeline.
Em princípio, a entrada é gratuita.
In principle, admission is free.
Em princípio, todos podem participar.
As a general rule, everyone can take part.
A entrega deve chegar amanhã, em princípio.
The delivery should arrive tomorrow, in principle.
Use the timeline test
Ask whether you are describing an early stage that may change or a general expectation that may have exceptions. The first idea points to a princípio; the second points to em princípio.
Because the phrases differ by only one preposition, learn them in a complete sentence and practice saying them with the rest of the clause.
A princípio, a rua estava vazia.
At first, the street was empty.
Em princípio, a rua fica aberta ao trânsito.
In general, the street is open to traffic.
A princípio, eu ia de carro; em princípio, agora vou de ônibus.
At first I was going by car; as things stand, I’m going by bus now.
Put it into practice
Remember the contrast: a princípio looks back at an initial moment; em princípio states a general principle or expectation.
Quick practice
Which Portuguese example matches “At first, I thought the exercise was difficult, but I liked it later”?
Choose an answer to check yourself.
Keep practicing with the Real Life Portuguese app
Build on this guide with everyday expressions and native Brazilian audio. Choose iPhone, Android, or the web app.