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

• dishelms ₁₅
• helmeted ₁₅
• helminth ₁₇
• helmless ₁₅
• helmsman ₁₈
• helmsmen ₁₈
• unhelmed ₁₇
• whelming ₂₀

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