There are a total of 40 11-letter words containing 'yph', and the number may vary in different dictionaries. You can specify the dictionary and order.

• antityphoid ₂₀
• cypherpunks ₃₀
• entryphones ₂₀
• hieroglyphs ₂₃
• hippogryphs ₂₈
• hyphenating ₂₄
• hyphenation ₂₂
• ithyphallic ₂₅
• paratyphoid ₂₂
• petroglyphs ₂₄
• polyphagias ₂₄
• polyphagies ₂₄
• polyphagous ₂₅
• polyphenols ₂₄
• polyphonies ₂₃
• polyphonist ₂₃
• polyphonous ₂₄
• scyphistoma ₂₄
• scyphozoans ₃₁
• syphilitics ₂₂
• typhlosoles ₂₀
• glyphosates ₂₀
• typhlitises ₁₉
• anaglyphies ₂₀
• dendroglyph ₂₂
• ditriglyphs ₂₁
• glyphograph ₂₆
• hyphenising ₂₃
• hyphenizing ₃₂
• ithyphallus ₂₂
• lithoglyphs ₂₃
• petroglyphy ₂₅
• photoglyphs ₂₅
• photoglyphy ₂₈
• syphilising ₂₀
• syphilizing ₂₉
• syphilology ₂₃
• syphilomata ₂₁
• tachyphasia ₂₄
• tyroglyphid ₂₄

There are 40 11-letter words containing yph in the well-known word game dictionary, 19 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 37 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 21 in the Words with Friends (WWF) dictionary.