Speech delay is failure to acquire words by 18-24 months of age or phrases by 3 years of age. It is a common childhood problem affecting 3 to 10 percent of children. The most common cause of speech delay is Constitutional Speech Dealy (Late Speaker). As your child’s other developmental milestones are normal (as per your description), so he might be suffering from this problem. In constitutional speech delay there might have a history of same problem in other family members during their childhood. Though you mentioned that your child listen everything, even then it is recommended to perform hearing assessment in every child with speech delay. After doing that you should contact Child Development Centre (CDC) /Shishu Bikash Kendro(SBK) situated at every Medical College Hospital Outdoor, Dhaka Shishu Hospital, BSMMU(PG Hospital) etc. Very few children might need speech theraphy which you can get in these centres. You can have your child’s hearing assessment at BSMMU, Sahabagh, Dhaka or SAHIC, Mohakhali (028822007, 029881535, 028856537), Dhaka.