Antonym of FOSTER

Foster : encourage the development of (something, especially something desirable).
Repress : subdue (someone or something) by force.
Curb : a check or restraint on something.
Check : examine (something) in order to determine its accuracy, quality, or condition, or to detect the presence of something.
Control : the ability to manage a machine, vehicle, or other moving object.

Antonym of Foster is Repress