安危[anki] fate
危うい[ayaui] dangerous
危うく[ayauku] barely
危ない[abunai] dangerous
危ながる[abunagaru] to be afraid of

危なっかしい[abunakkashii] dangerous
危ぶむ[ayabumu] to fear
危める[ayameru] to wound
危絵[abunae] suggestive or indecent picture
危害[kigai] injury

咄嗟[tossa] moment
咄嗟に[tossani] at once
怨嗟[ensa] (deeply held) resentment

嗟嘆[satan] lamentation
嗟歎[satan] deploration