Turn this distinction into automatic recall
Falando teaches Brazilian Portuguese through grammar, vocabulary, audio, examples, and spaced review, so confusing pairs stop feeling like guesses.
Quick answer
Comprimento is physical length. Cumprimento is greeting or fulfillment.
A reliable test is to identify the job of the word before translating from English.
What each word does
comprimento
length
Use comprimento for measurement from one end to another.
cumprimento
greeting or fulfillment
Use cumprimento for a greeting, compliment-like salutation, or carrying out an obligation.
How to choose
- comprimento: Choose comprimento if the sentence points to measurement from one end to another.
- cumprimento: Choose cumprimento if the sentence points to a greeting, compliment-like salutation, or carrying out an obligation.
Examples
Qual e o comprimento da ponte?
What is the length of the bridge?
Ele mandou cumprimentos.
He sent greetings.
Common trap
The spelling difference is small, but the meanings are unrelated.
Practice it in context
Pick one sentence from your real life and write it twice: once with comprimento, then once with cumprimento. If both versions feel possible, name the meaning shift.
Turn this distinction into automatic recall
Falando teaches Brazilian Portuguese through grammar, vocabulary, audio, examples, and spaced review, so confusing pairs stop feeling like guesses.