animarse (a): 1. cobrar ánimos, ganas o valor para hacer algo; atreverse. 2. ponerse alegre o animado.
-Mañana vamos a subir al Mulhacén. ¿Te animas? — Tomorrow we're going to climb Mulhacén. Are you game/up for it?
-Si te animas, podríamos hablarlo con el banco — If you feel up to it, we could speak to the bank
-En este momento no me animo a salir — I don't feel like going out right now
-Nadie se animó a sacar el tema — No one ventured to raise the subject
-Parece que Juan se ha animado ahora que María ha llegado— It looks like Juan has cheered up now that María has arrived
-La fiesta se está animando — The party is livening up
-Anímate, tío. No es para tanto — Cheer up, mate. It's not that bad