reinforcement (suomeksi)

vahvistaminen (s: act or state of reinforcing or being reinforced / behavioral psychology: process whereby a behavior with desirable consequences comes to be repeated)
vahvike (s: thing that reinforces)
lujike (s: thing that reinforces)
apuvoimat (s: in plural: additional troops or materiel sent to support a military action)
vahvistukset (s: in plural: additional troops or materiel sent to support a military action)