The phrase "capable adult" refers to a person who is competent and able to make their own decisions and take care of themselves responsibly in everyday life. Full definition
This is a one - size carrier that can be shared between all parents, caregivers and other capable adults who will be wearing the baby. (abckidsinc.com)
To become capable adults, teenagers need to learn to make good decisions on their own. (raisingchildren.net.au)
The best school is the one that teaches kids effectively while also grooming them for life as capable adults. (edredesign.org)