to doubt / to have doubts / to be doubtful / to distrust, to mistrust / to call (a matter) into question

enemy (a hostile force or nation; a fighting member of such a force or nation)

Alternative form of 敵国 (tekikoku)

a spy / espionage

conduct espionage, spy

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

(idiomatic) to doubt what one just heard; hearing something surprising

industrial spy