蒼惶[soukou] hurry 蒼惶として[soukoutoshite] in great haste 恐惶謹言[kyoukoukingen] Very truly yours (a complimentary close used in a letter written in an old epistolary style)
恐惶敬白[kyoukoukeihaku] Very truly yours (a complimentary close used in a letter written in an old epistolary style) 惶遽[koukyo] being afraid and panicked 惶懼[kouku] being struck with awe