ねIsn't it?, Right? (Sentence ending particle)

よ and ね are common sentence-ending particles that add feeling or nuance. よ adds emphasis and is used when giving new information or asserting something (e.g., 面白いですよ = 'It's interesting, I'm telling you!'). ね is used to seek agreement or confirmation (e.g., 面白いですね = 'It's interesting, isn't it?'). When combined as よね, they express both emphasis and a request for agreement.

でしょう is a form of です used when the speaker is uncertain, often translated as 'probably,' 'I guess,' or '...right?' when asking a question. In contrast, ね is a sentence-ending particle used to seek confirmation or agreement, similar to '...isn't it?' When combined (e.g., 面白いでしょうね), the sentence expresses both uncertainty and a request for agreement: 'It's probably interesting, isn't it?'

じゃないか and ね both seek agreement at the end of a sentence, but they have different nuances and levels of politeness. じゃないか is casual and assertive, often strongly insisting on an opinion, and can feel confrontational, making it best suited for use among close friends. In contrast, ね is softer and used widely to seek gentle agreement or confirmation in various contexts.

だろう is a form of だ used when the speaker feels uncertain. It's often translated as 'probably,' 'I guess,' or '...right?' when asking a question. In contrast, ね is used to seek confirmation or agreement, often translated as '...isn't it?' These two can combine to express both uncertainty and confirmation, as in 面白いだろうね ('It's probably interesting, isn't it?').