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spicy; hot
salty
harsh (criticism); severe (punishment); strict
painful; bitter; difficult; tough
「辛い」 has other readings with different meanings.
この料理はかなり辛いよ。
This dish is quite spicy.
辛いものが好きだけど限度がある。
I like spicy food but there's a limit.
辛くて涙が出るほどだったけど美味しかった。
It was so spicy it brought tears, but it was delicious.