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unnervous
unnervous adj.
Brit. 
/(ˌ)ʌnˈnəːvəs/
, /(ˌ)ʌnˈnəːvəs/U.S. /ˌənˈnərvəs/
/ˌənˈnərvəs/ΚΠ
1749 J. Cleland Mem. Woman of Pleasure II. 128 How faulter'd and unnervous the execution!
1861 A. J. Penny Romance Dull Life xl. 295 An unnervous nature, blessed with social effrontery.
1953 N. Coward Diary 18 May (2000) 212 Again I was curiously un-nervous and gave a controlled performance.
2013 Daily Tel. (Nexis) 27 July (Mag. section) Her gaze is remarkably unflinching; unnervous, but not stern.
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