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
Faltar measures what is missing from the need; sobrar measures what remains beyond it.
A reliable test is to identify the job of the word before translating from English.
What each word does
faltar
to be missing or insufficient
Use faltar for a needed amount, item, person, or time not being present.
sobrar
to be left over
Use sobrar for an amount remaining beyond what was used or needed.
How to choose
- faltar: Choose faltar if the sentence points to a needed amount, item, person, or time not being present.
- sobrar: Choose sobrar if the sentence points to an amount remaining beyond what was used or needed.
Examples
Faltam dez reais para pagar a conta.
We are ten reais short of paying the bill.
Sobrou comida para amanhã.
There was food left over for tomorrow.
Common trap
Portuguese often puts the quantity as the subject: faltam dez minutos and sobraram duas vagas.
Practice it in context
Pick one sentence from your real life and write it twice: once with faltar, then once with sobrar. 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.