N5 — outside your level filter

よ

よyoN5neutral

tasteless + I'm telling you — news for the listener

akushumida yo

I'm telling you — news for the listener

meaning: I'm telling you — news for the listener

その電車でんしゃ、もう出でましたよ。

sono densha, mou demashita yo.

That train's already left, you know. neutral

早はやく行いこうよ、間まに合あわないよ。

hayaku ikou yo, ma ni awanai yo.

Come on, let's go — we won't make it. casual

All examples4

telling — supplies something the listener doesn't know yet

その電車でんしゃ、もう出でましたよ。
sono densha, mou demashita yo.
That train's already left, you know. neutral
鍵かぎ、テーブルの上うえに置おいたよ。
kagi, teeburu no ue ni oita yo.
I put the keys on the table. casual

pressing — the same push behind an invitation, a warning or a request

早はやく行いこうよ、間まに合あわないよ。
hayaku ikou yo, ma ni awanai yo.
Come on, let's go — we won't make it. casual
あまり無理むりしないでくださいよ。
amari muri shinaide kudasai yo.
Please don't push yourself too hard. neutral

だ survives before よ (雨あめだよ). よ presses sideways and downward freely,
staying rare upward (承知しょうちしましたよ reads as impatience).