dissuasive

adjectives

deterring from action
"dissuasive advice"; "made a slight dissuasive gesture with her hand"
dissuasive
is derived from
dissuade
antonym
persuasive
is similar to
serving to warn
"shook a monitory finger at him"; "an exemplary jail sentence"
admonitory, cautionary, exemplary, monitory, warning
is similar to
expressing disapproval
discouraging
see also
depriving of confidence or hope or enthusiasm and hence often deterring action
"where never is heard a discouraging word"
discouraging