midteens noun[plural only]3 •The period around the middle of the teenage years, such as ages 15 and 16Many children first experiment with drugs and alcohol in their midteens. •Around the middle of the teens.The forecast calls for a slight warming trend in the coming days, with sunny skies and daytime temperatures reaching the midteens on Sunday and Monday, when the men will hit the snowboard course. — 2022 •People whose age is in the middle of the teenage years.Most of the midteens in the survey were interested in video games and films.
