

Ela acenou com a cabeça e sorriu.
Não precisas de falar, basta acenar com a cabeça.
Quando concorda, o meu chefe acena com a cabeça.
"acenar" is in the lesson "Verbs 10" (Level 22), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.