2 sentences for 嘀咕 (dí​gu)

1. 听了他的话，我心里直嘀咕。

   tīng le tā de huà, wǒ xīn​li zhí dí​gu.

   His words left me full of misgivings.

   Source: Dong Chinese Dictionary

2. 他们在角落里小声嘀咕着什么。

   tā​men zài jiǎo​luò lǐ xiǎo​shēng dí​gu zhe shén​me.

   They were whispering something in the corner.

   Source: Dong Chinese Dictionary