Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
作为管理者,他不能因为个人偏好就任性地改变既定方案。Zuòwéi guǎnlǐzhě, tā bù néng yīnwèi gèrén piānhào jiù rénxìng de gǎibiàn jìdìng fāng'àn.As a manager, he cannot wilfully change the established plan simply because of personal preference.
小时候他一任性就哭,现在学会控制情绪了。Xiǎoshíhou tā yī rènxìng jiù kū, xiànzài xuéhuì kòngzhì qíngxù le.When he was little, he cried whenever he was willful; now he has learned to control his emotions.
小孩子偶尔任性很正常,大人不必太生气。Xiǎo háizi ǒu'ěr rènxìng hěn zhèngcháng, dàrén búbì tài shēngqì.It's normal for small children to be willful sometimes; adults needn't get too angry.