悪疾[akushitsu] malignant or virulent disease
公務疾病[koumushippei] sickness incurred in line of duty
際疾い[kiwadoi] very close
歯牙疾患[shigashikkan] dental disease
疾っくに[tokkuni] long ago

疾患[shikkan] disease
疾走[shissou] sprint
疾病[shippei] illness
疾風[shippuu] gale
疾風迅雷[shippuujinrai] with lightning speed