Potential answers for "Like unripe apples"

⭐⭐⭐⭐ SOUR
⭐⭐⭐⭐ TART
⭐⭐⭐ ACERB
⭐⭐⭐ FIRM
⭐⭐ THEM
⭐⭐ MALIC
⭐⭐ WORMY
⭐⭐ EMPIRES

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