Realize vs. Realizar: The Portuguese Meaning Is Different
Portuguese realizar often means to carry out or accomplish. For the moment you realize or notice something, try perceber or notar.
Real Life Portuguese · 5 min read · Updated October 14, 2026
The short answer
English realize often means to become aware of or understand something. Portuguese realizar usually means to carry out, perform, or accomplish an action. For an idea that suddenly becomes clear, perceber is often the natural choice; notar works well when you mean to notice a detail.
Use perceber when an idea becomes clear
Realizar also appears in formal contexts such as realizar uma pesquisa (conduct research) or realizar um sonho (fulfil a dream). The surrounding noun helps show which sense is intended.
Percebi que tinha esquecido a carteira.
I realized I had forgotten my wallet.
Ela realizou o sonho de conhecer o Brasil.
She fulfilled her dream of visiting Brazil.
Notei uma diferença na pronúncia.
I noticed a difference in the pronunciation.
Choose the verb by the action in your sentence
Ask whether someone has become aware of something or has completed an activity. Perceber and notar fit awareness; realizar fits carrying out, conducting, or fulfilling. English “realize a plan” can mean making it happen, so realizar may be correct there even though the same verb is not the usual translation for “I realized the door was open.”
Só depois da conversa percebi o problema.
Only after the conversation did I realize the problem.
A equipe realizou uma pesquisa com os alunos.
The team conducted a survey with the students.
Put it into practice
Use perceber or notar for noticing and understanding; use realizar for carrying out or achieving. Let the action determine the verb.
Quick practice
Which Portuguese example matches “Only after the conversation did I realize the problem”?
Choose an answer to check yourself.
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