Phono-semantic — one part hints at the meaning, another at the sound
Example phrases
你别胡思乱想,他只是今天太忙,没来得及回消息。Nǐ bié hú sī luàn xiǎng, tā zhǐshì jīntiān tài máng, méi láidejí huí xiāoxi.Don't let your imagination run wild; he was simply too busy today and did not have time to reply.
晚上睡不着的时候,我总爱胡思乱想。Wǎnshang shuì bù zháo de shíhou, wǒ zǒng ài hú sī luàn xiǎng.When I cannot sleep at night, I always let my thoughts run wild.
坐在窗边发呆,他又开始胡思乱想了。Zuò zài chuāngbiān fādāi, tā yòu kāishǐ hú sī luàn xiǎng le.Sitting by the window in a daze, he started to let his thoughts wander again.