率性

    shuàixìng

    1. Verbto act naturally, authentically and spontaneously (whether seen as admirable – "bold" – or problematic – "impulsive")

    他是一个很率性的人,总是想做什么就做什么。Tā shì yīge hěn shuàixìng de rén, zǒngshì xiǎng zuò shénme jiù zuò shénme.He is a very spontaneous person, always doing whatever he feels like.