peer group 
noun
A group of people of approximately the same age, status, and interests: prodigies should spend as much time as possible with their peer group...
- Teachers completed two measures of children's social status in the peer group.
- Status within the peer group is secured by having a desirable, alpha male boyfriend.
- There was a lot of pressure from clients and my peer group to buy stocks in this sector which I believed were overvalued and unsustainable.
- subinfeudate
- subinfeudation
- subinfeudatory
- subingression
- subinhibitory
- subintellection
- subintelligence
- sub-intention
- subintentional
- subintentioned
- subinterval
- subintrant
- subintroduced
- subinvariant
- subinvoluted
- subinvolution
- subirrigate
- subirrigated
- subirrigation
- subitane
- subitaneous
- sub-item
- subitise
- subitize
- subito