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

懐疑[kaigi] doubt
危疑[kigi] fear
疑い[utagai] doubt
疑い深い[utagaibukai] doubting
疑う[utagau] to doubt

疑り[utaguri] doubt
疑わしい[utagawashii] doubtful
疑雲[giun] cloud of suspicion
疑義[gigi] doubt