1. He was doubtful of the outcome. (±×´Â ±× °á°ú¿¡ ÀÚ½ÅÀÌ ¾ø¾ú´Ù) 2. It is doubtful whether the rumor is true or not. (±× ¼Ò¹®ÀÌ »ç½ÇÀÎÁö ¾Æ´ÑÁö Àǽɽº·´´Ù) 3. The outcome is doubtful. (°á°ú´Â ¾îÂî µÉÁö ¸ð¸¥´Ù) 4. a doubtful character (¼ö»ó½Àº Àι°) 5. in doubtful taste (¾ßºñÇÏ°Ô)