密偵 is read as みってい (mittei) and means spy.
みってい
mittei
みつにゅうこく
smuggling oneself into a country
みつど
density
みつゆ
smuggling
みっせつ
being in close proximity
みつばい
illicit sale
みっしゅう
crowding together
みっしつ
locked room
みつやく
secret agreement
みっちゃく
contact printing
ひそか
secret
みっこう
smuggling (people)
みつりん
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