anxiogenic
adjective
an·xi·o·gen·ic
| \ ˌaŋ-zē-ō-ˈje-nik, ˌaŋ(k)-sē-
\
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Medical Definition of anxiogenic
: producing anxiety
… giving up smoking is quite rapidly followed by a reduction in anxiety that may reflect removal of an anxiogenic agent, nicotine.— Robert West and Peter Hajek, The American Journal of Psychiatry, November 1997