诡秘 | guǐ mì | secretive / furtive / surreptitious | |
鬼鬼祟祟 | guǐ guǐ suì suì | sneaky / secretive / furtive | |
鬼头鬼脑 | guǐ tóu guǐ nǎo | sneaky / furtive | |
贼头贼脑 | zéi tóu zéi nǎo | lit. to behave like a thief / furtive / underhand | |
偷眼 | tōu yǎn | to take a furtive look at | |
贼眼 | zéi yǎn | shifty gaze / furtive glance |