throw the baby out with the bathwater, To discard something valuable or essential while trying to get rid of something unwanted.
baby steps, Small, gradual progress or actions taken towards a goal.
Word Origin
Language
Middle English
Original word
baban
Originally meant
infant, young child
Background
The word 'baby' is believed to have originated from the repetitive sounds made by infants, which were mimicked by adults. It has been used in English since the late Middle Ages.