There are a total of 51 8-letter words containing 'pop', and the number may vary in different dictionaries. You can specify the dictionary and order.

• alcopops ₁₈
• antipope ₁₅
• apophony ₁₉
• apophyge ₂₀
• apoplexy ₂₄
• epopoeia ₁₄
• hypopnea ₁₉
• hypopyon ₂₁
• lollipop ₁₇
• lollypop ₁₉
• opopanax ₂₂
• opoponax ₂₂
• popadoms ₁₈
• popcorns ₁₈
• popedoms ₁₈
• popeless ₁₅
• popelike ₁₉
• poperies ₁₄
• popinjay ₂₆
• popishly ₁₉
• poplitic ₁₈
• popovers ₁₈
• poppadom ₂₁
• poppadum ₂₂
• poppiest ₁₇
• poppling ₂₁
• popsicle ₁₈
• popsocks ₂₁
• popsters ₁₄
• popstrel ₁₅
• populace ₁₉
• populate ₁₆
• populism ₁₉
• populist ₁₆
• populous ₁₇
• powerpop ₂₀
• synthpop ₁₉
• poplitei ₁₂
• popplier ₁₄
• agitpops ₁₃
• apoplast ₁₂
• popadums ₁₅
• popehood ₁₆
• popeling ₁₃
• poperins ₁₂
• popeseye ₁₅
• popeship ₁₇
• popettes ₁₂
• popjoyed ₂₃
• populars ₁₂
• unpoping ₁₃

There are 51 8-letter words containing pop in the well-known word game dictionary, 34 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 46 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 37 in the Words with Friends (WWF) dictionary.