Denshi Jisho — Online Japanese dictionary

Found 4 sentences.

13不吉であるといういる Some people say thirteen is an unlucky number.
13金曜不吉と言われている It is said that Friday the 13th is an unlucky day.
13不吉という迷信信じている He believes in the superstition that 13 is an unlucky number.
ひと似た不気味な鳴き漆黒死肉啄む姿などから不幸舞い降りる不吉として世界知られています A creepy cry that sounds like a human voice, velvet black wings, the image of tearing into dead flesh; crows are known across the world as an ill-omened bird that flies down with ill-luck.