9-Month-Old’s Developmental Milestones: A Complete Guide
He/she understands the meaning of “no” and might be using the word.
Behavior is already something being worked on. Some parents might find it a relief to know that their little ones should be able to understand the meaning of “no,” by nine months old. KidsHealth.org says that it is a communication and language skills milestone for the age. But, it is not without is frustrations. First, just because your little one knows what “no” means doesn’t mean he/she will follow it. Secondly, your baby will likely start communicating “no” themselves either by actually saying it, shaking his/her head, or even turning away. We’re warning you now.