Portuguese Phrase
Obrigado/Obrigada pela ajuda.
Meaning
Literally “Thank you for the help,” this phrase expresses gratitude for assistance that someone has just given you. It works in both casual and semi‑formal contexts.
When to use
Use it right after someone has helped you with a task, answered a question, or provided any kind of support. It’s appropriate in everyday conversation, at work, in school, or even in written thank‑you notes.
✦Grammar Breakdown
Obrigado/Obrigadapelaajuda
Obrigado/Obrigada (gender agreement)
The word changes to match the speaker’s gender: "obrigado" for males, "obrigada" for females.
pela = por + a
"pela" is the contraction of the preposition "por" (for) and the feminine article "a", used because "ajuda" is feminine.
ajuda (noun)
"ajuda" means “help” and is a feminine noun, so the article "a" is required.
🗨In Conversation
Precisa de ajuda com a bagunça?
Do you need help with the mess?
Sim, obrigado pela ajuda!
Yes, thank you for the help!
✕Common Mistakes
Obrigada a ajuda.
"Obrigada a ajuda" mixes the preposition "a" (to) with "ajuda"; the correct preposition is "por" contracted to "pela".
Eu sou mulher e digo: Obrigado pela ajuda.
Female speakers should use "obrigada"; using the masculine form sounds unnatural.
Obrigado por ajuda.
"Por ajuda" is ungrammatical because "ajuda" needs the article "a"; you must say "pela ajuda".
↔Alternatives
Valeu pela ajuda.
Thanks for the help. (colloquial)
Agradeço a sua ajuda.
I appreciate your help. (more formal)
Obrigado(a) por sua ajuda.
Thank you for your help.
Cultural Tip
In Brazil, saying "obrigado/a" is the most common way to show gratitude, and speakers always match the word to their gender. In Portugal the same rule applies, but you’ll also hear "muito obrigado" for extra emphasis. Avoid over‑using "obrigado" in very formal written letters; a phrase like "Agradeço a sua ajuda" sounds more polished.