news; notice; notification; information
General term for information or news that is communicated, often used in announcements or personal updates. The polite form お知らせ is very common.
See also: お知らせ
彼から結婚の知らせが届いた。
I received news of his marriage.
A notice about tomorrow's power outage is posted on the bulletin board.
Refers to a sign or feeling that something is about to happen, often with a slightly ominous or fateful nuance. Less common than sense 1.
A black cat crossing your path is said to be a bad omen.
Yesterday, news of her marriage reached me.
I have some good news and some bad news.
I received news that my father had been hospitalized.
The company sent a notice to all employees.
My deceased grandfather appeared in my dream, and it felt like some kind of omen.
知らせ is a general, everyday word for news or notice, while 報 is a formal term used mainly in compounds and written contexts.
知らせ is the everyday, native-Japanese word for news or a notice, while 報知 is a more formal, often technical term for the act of informing.
知らせ is any notification or news, spoken or written, whereas 便り specifically suggests a letter or written word from someone.
知らせ is a neutral, everyday word for news or a notice of any kind, whereas 悲報 specifically implies the news is sad or tragic.