S: (v) warn, discourage, admonish, monish (advise 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"
S: (adj) demoralized, demoralised, discouraged, disheartened (made less hopeful or enthusiastic) "desperate demoralized people looking for work"; "felt discouraged by the magnitude of the problem"; "the disheartened instructor tried vainly to arouse their interest"