To have the courage or audacity to do something, especially when it's difficult or risky
Encoding Strategies:
mnemonic

adventure
adventure
+
-erse
reflexive verb suffix
Atreverse means to dare and sounds like the English word adventure0 turned into a reflexive verb1, as you must be daring when you go on an adventure.
atreverse
to dare, to venture
When you dare yourself to do something, you have the courage or bravery to do it.
- Me atreví a hablar frente a toda la clase = I dared to speak in front of the whole class
- Ella se atrevió a intentar algo nuevo = She ventured to try something new