There are a total of 47 9-letter words containing 'sun', and the number may vary in different dictionaries. You can specify the dictionary and order.

• disunions ₁₃
• disunited ₁₃
• disunites ₁₂
• misunions ₁₅
• sunbakers ₁₈
• sunbaking ₂₁
• sunbathed ₁₇
• sunbather ₁₆
• sunbathes ₁₆
• sunblinds ₁₇
• sunblocks ₂₂
• sunbonnet ₁₆
• sunburned ₁₇
• sunbursts ₁₅
• sunchokes ₂₀
• suncreams ₁₇
• sundances ₁₆
• sunderers ₁₂
• sundering ₁₅
• sundowner ₁₆
• sunfishes ₁₆
• sunflower ₁₈
• sungazers ₂₂
• sungrebes ₁₆
• sunkissed ₁₆
• sunlights ₁₆
• sunniness ₁₃
• sunscalds ₁₆
• sunscreen ₁₅
• sunseeker ₁₅
• sunshades ₁₄
• sunshines ₁₄
• sunshower ₁₆
• sunspaces ₁₇
• sunstones ₁₂
• sunstroke ₁₅
• sunstruck ₁₉
• suntanned ₁₄
• disuniter ₁₀
• sundowned ₁₄
• aftersuns ₁₂
• dissunder ₁₁
• sunbeamed ₁₄
• sunbeaten ₁₁
• sunbright ₁₅
• sunlessly ₁₂
• sunrising ₁₀

There are 47 9-letter words containing sun in the well-known word game dictionary, 30 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 40 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 38 in the Words with Friends (WWF) dictionary.