🤫rosto fazendo sinal de silêncioA face with a finger over closed lips. Conveys silence, secrets and "shh".
👌sinal de okAn OK hand. Conveys "okay", approval — but in some cultures it can be an offensive gesture, so context matters.
🛑sinal de pareA stop sign. Means stopping, halting and boundaries. Use it for "stop right there" and road safety.