犯嘀咕

to hesitate / to have second thoughts / to be concerned / to brood (over sth) / to complain

to violate / to offend / to assault / criminal / crime / to make a mistake / recurrence (of mistake or sth bad)

(onom.) sound of dripping water, a ticking clock etc

to mutter / to feel apprehensive

(onom.) for the sound of a bird, an empty stomach etc