discourage

verbs

try to prevent; show opposition to
"We should discourage this practice among our youth"
deter, discourage
is derived from
discouragement
deprive of courage or hope; take away hope from; cause to feel discouraged
discourage
is derived from
discouragement
antonym
encourage
admonish or counsel in terms of someone's behavior
"I warned him not to go too far"; "I warn you against false assumptions"; "She warned him to be quiet"
admonish, discourage, monish, warn