dis·sua·sive /dɪˈswesɪv, zɪv/
  (a.)勸戒的
  Dis·sua·sive a. Tending to dissuade or divert from a measure or purpose; dehortatory; as, dissuasive advice. -- n. A dissuasive argument or counsel; dissuasion; dehortation. --Prynne. -- Dis*sua*sive*ly, adv.
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  dissuasive
       adj : deterring from action; "dissuasive advice"; "made a slight
             dissuasive gesture with her hand" [ant: persuasive]