There are a total of 161 9-letter words containing 'mal', and the number may vary in different dictionaries. You can specify the dictionary and order.

• abnormals ₁₇
• abysmally ₂₁
• acrosomal ₁₆
• animalier ₁₄
• animalise ₁₄
• animalism ₁₇
• animalist ₁₄
• animality ₁₆
• animalize ₂₃
• anomalies ₁₄
• anomalous ₁₅
• autosomal ₁₄
• baptismal ₁₉
• blastemal ₁₇
• conformal ₂₀
• coseismal ₁₆
• customals ₁₇
• custumals ₁₈
• decimally ₂₀
• dismalest ₁₄
• ependymal ₂₀
• epidermal ₁₇
• erythemal ₁₇
• formalins ₁₇
• formalise ₁₆
• formalism ₁₉
• formalist ₁₆
• formality ₁₈
• formalize ₂₅
• grimalkin ₂₀
• intermale ₁₄
• lachrymal ₂₁
• lacrimals ₁₇
• lacrymals ₁₉
• liposomal ₁₇
• lognormal ₁₇
• lysosomal ₁₆
• malachite ₁₈
• maladroit ₁₄
• malaguena ₁₇
• malagueta ₁₆
• malamutes ₁₇
• malaperts ₁₆
• malaprops ₁₉
• malarious ₁₄
• malarkeys ₁₉
• malarkies ₁₇
• malaromas ₁₆
• malathion ₁₆
• malaxated ₂₁
• malaxates ₂₀
• maledicts ₁₇
• malemiuts ₁₇
• malemutes ₁₇
• malformed ₂₀
• malicious ₁₇
• malignant ₁₇
• maligners ₁₆
• maligning ₁₉
• malignity ₁₈
• malihinis ₁₆
• malingers ₁₆
• malleable ₁₈
• malleably ₂₀
• malleolus ₁₆
• malodours ₁₅
• malonates ₁₄
• malthouse ₁₆
• maltiness ₁₄
• maltreats ₁₃
• maltsters ₁₃
• malvasias ₁₇
• malvoisie ₁₇
• mamaligas ₁₈
• mammalian ₂₀
• mammalogy ₂₃
• marmalade ₁₇
• marmalise ₁₆
• marmalize ₂₅
• maximally ₂₆
• minimally ₂₀
• nonanimal ₁₆
• nonformal ₁₈
• normalise ₁₄
• normality ₁₆
• normalize ₂₃
• optimally ₁₉
• permalink ₂₁
• permalloy ₁₉
• primality ₁₈
• prodromal ₁₇
• ribosomal ₁₆
• rosemaled ₁₄
• schmaltzy ₂₉
• schmalzes ₂₇
• shmaltzes ₂₄
• smallages ₁₆
• smallbore ₁₇
• smallness ₁₅
• smalltalk ₁₉
• smalltime ₁₇
• smalltown ₁₈
• smaltines ₁₄
• smaltites ₁₃
• subdermal ₁₈
• subnormal ₁₈
• supermale ₁₇
• thermally ₁₈
• tomalleys ₁₆
• vigesimal ₁₉
• animalian ₁₁
• malanders ₁₂
• mallemuck ₁₉
• malleolar ₁₁
• malpighia ₁₇
• malvasian ₁₄
• mammality ₁₈
• megamalls ₁₄
• nonnormal ₁₁
• rhabdomal ₁₇
• ribozymal ₂₅
• bumalotis ₁₃
• bummaloti ₁₅
• chrismals ₁₆
• dismality ₁₅
• dismaller ₁₂
• exodermal ₁₉
• extremals ₁₈
• fantasmal ₁₄
• gimmalled ₁₅
• harmaline ₁₄
• harmalins ₁₄
• hickymals ₂₃
• homaloids ₁₅
• isochimal ₁₆
• isocrymal ₁₆
• malaxages ₁₉
• malaxator ₁₈
• maleffect ₁₉
• malefices ₁₆
• malengine ₁₂
• malingery ₁₅
• mallander ₁₂
• malleated ₁₂
• malleates ₁₁
• mallechos ₁₆
• mallender ₁₂
• malleuses ₁₁
• malmstone ₁₃
• malsticks ₁₇
• maltalent ₁₁
• maltworms ₁₆
• malvesies ₁₄
• metamales ₁₃
• rasmalais ₁₁
• smallboys ₁₆
• smallsats ₁₁
• toponymal ₁₆
• trionymal ₁₄
• undecimal ₁₄
• vicesimal ₁₆

There are 161 9-letter words containing mal in the well-known word game dictionary, 105 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 152 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 110 in the Words with Friends (WWF) dictionary.