像桃子：顏色與味道
直接把桃子當比較對象，最貼近字面。
adjective · B2
Tasting or smelling like a peach, or looking like one — that soft warm orange-pink colour and soft surface.
像桃子的（味道或顏色）
核心畫面
One way to hold peachy: a ripe peach in your hand. Soft skin, warm pink-orange colour, sweet smell — nothing sharp about it anywhere. Everything the word does grows out of that one fruit. Point it at a wall or a face and you get the colour; point it at a whole situation and you get the feeling, a life as easy as biting into the fruit. And because that feeling is so unmistakably pleasant, it is perfect for saying when your day is anything but.
peachy 可以想成手上一顆熟透的水蜜桃：皮是軟的，顏色是溫溫的橘粉，聞起來甜，沒有一處是尖銳的。這個字所有的用法…更多收起
peachy 可以想成手上一顆熟透的水蜜桃：皮是軟的，顏色是溫溫的橘粉，聞起來甜，沒有一處是尖銳的。這個字所有的用法都從這顆桃子長出來。把它指向一面牆或一張臉，得到的是顏色；把它指向整個狀況，得到的是感覺——日子順得像咬一口桃子。也正因為這個感覺太明確是「好」，它才特別適合在很不順的時候平平地說出口。From the word’s history
Peachy is simply peach + -y, 'having the quality of a peach', so the fruit is not a metaphor bolted on later — it is what the word is made of.
peachy 就是 peach 加上字尾 -y（帶有…特質的）。所以桃子不是後來才加上的比喻，而是這個字的組成本身。
Wiktionary/kaikki entry for peachy (source_ref kaikki:3f6f69a190036ae4:785775832): 'From peach + -y.'
Two branches
口語：一切美好（含反話）
從「桃子給人的舒服感覺」跳到「整個狀況給人的舒服感覺」。
adjective · B2
Very good, fine, or going well — and, said in a flat voice, the same word is used to mean that things are in fact going badly.
好得很；（反話）真「棒」