唠叨
láo dao · HSK 7
to nag
🗣️ Both 唠 and 叨 carry 口 (mouth): two mouths going non-stop = nagging chatter
唠 = 口 mouth + 劳 labor, so a mouth that toils away talking; 叨 = 口 mouth + 刀 knife, a mouth that cuts at you. Together: endless, grating nagging. Sound cue: láo dao ~ a low drone that never lets up.