There are a total of 170 9-letter words containing 'yc', and the number may vary in different dictionaries. You can specify the dictionary and order.

• acyclovir ₂₂
• aglycones ₁₈
• alicyclic ₂₂
• alleycats ₁₆
• antimycin ₁₉
• babyccino ₂₄
• babycinos ₂₁
• babycorns ₂₁
• bicyclers ₂₁
• bicycling ₂₄
• bicyclist ₂₁
• billycans ₂₀
• billycart ₁₉
• billycock ₂₆
• biocycles ₂₁
• bleomycin ₂₂
• bodycheck ₂₇
• bodyclock ₂₆
• bombycids ₂₄
• boychicks ₂₆
• boycotted ₁₈
• boycotter ₁₇
• bycatches ₂₂
• calyculus ₂₁
• carrycots ₁₇
• curlycues ₂₀
• currycomb ₂₄
• cycadeoid ₁₉
• cyclamate ₂₁
• cyclamens ₂₂
• cyclecars ₂₁
• cyclepath ₂₃
• cycleries ₁₈
• cycleways ₂₃
• cyclicals ₂₂
• cyclicity ₂₃
• cyclising ₂₁
• cyclitols ₁₉
• cyclizing ₃₀
• cycloidal ₂₀
• cyclopean ₂₂
• cyclopian ₂₂
• cyclopses ₂₁
• cyclorama ₂₁
• cyclotron ₁₉
• dicyclies ₁₉
• encyclics ₂₂
• epicycles ₂₁
• epicyclic ₂₄
• exercycle ₂₅
• exocyclic ₂₈
• glycaemia ₂₀
• glycaemic ₂₃
• glyceride ₁₈
• glycerine ₁₈
• glycerins ₁₈
• glycerols ₁₈
• glyceryls ₂₀
• glycogens ₂₀
• glycollic ₂₂
• glyconics ₂₁
• glycoside ₁₈
• glycosyls ₂₀
• handcycle ₂₂
• hemicycle ₂₃
• honeycomb ₂₃
• isocyclic ₂₁
• isopycnal ₁₉
• isopycnic ₂₁
• jerrycans ₂₄
• kanamycin ₂₃
• kilocycle ₂₃
• lifecycle ₂₂
• lycaenids ₁₇
• lychgates ₁₉
• lychnises ₁₈
• lycopenes ₁₉
• lycopsids ₁₉
• megacycle ₂₃
• mitomycin ₂₁
• monocycle ₂₂
• mycetomas ₂₀
• mycoflora ₂₁
• mycophagy ₂₆
• mycophile ₂₃
• mycotoxin ₂₅
• neomycins ₁₉
• noncyclic ₂₃
• ollycrock ₂₃
• oxycodone ₂₃
• paychecks ₂₆
• paycheque ₂₉
• pericycle ₂₁
• phycology ₂₄
• polyptych ₂₅
• poppycock ₃₀
• psychical ₂₃
• psychoses ₁₉
• psychosis ₁₉
• psychotic ₂₂
• puromycin ₂₂
• pussycats ₁₈
• pycnidial ₂₀
• pycnidium ₂₃
• recyclers ₁₈
• recycling ₂₁
• sycamines ₁₈
• sycamores ₁₇
• sycomores ₁₇
• sycophant ₂₀
• tricycled ₁₉
• tricycles ₁₈
• tricyclic ₂₁
• triptycas ₁₇
• triptychs ₁₉
• unicycles ₂₀
• upcycling ₂₅
• viomycins ₂₂
• acronycal ₁₆
• bombycoid ₂₁
• calycinal ₁₆
• calycular ₁₆
• cyclizine ₂₅
• cyclonite ₁₆
• gigacycle ₁₈
• glycemias ₁₇
• jonnycake ₂₅
• mycologic ₁₉
• mycorhiza ₂₈
• mycovirus ₁₉
• namaycush ₁₉
• outpsychs ₁₉
• phlyctena ₁₉
• polycarpy ₂₁
• polychete ₁₉
• psychisms ₂₁
• rifamycin ₁₉
• strychnic ₁₉
• tommycods ₁₉
• tycoonery ₁₇
• unicycled ₁₇
• autocycle ₁₆
• burleycue ₁₆
• calycules ₁₆
• concyclic ₂₀
• cyclicism ₂₀
• cyclogiro ₁₇
• cyclolith ₁₉
• daycentre ₁₅
• glycerias ₁₅
• glycocoll ₁₇
• merycisms ₁₈
• mycobiont ₁₈
• nyctalops ₁₆
• onychites ₁₇
• onychitis ₁₇
• onychiums ₁₉
• oomycetes ₁₆
• phycocyan ₂₄
• polyconic ₁₈
• psychists ₁₉
• psychogas ₂₀
• psychoids ₂₀
• recyclate ₁₆
• recyclist ₁₆
• strychnia ₁₇
• tricycler ₁₆
• tycoonate ₁₄
• worrycows ₂₀
• ycleeping ₁₇

There are 170 9-letter words containing yc in the well-known word game dictionary, 122 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 153 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 118 in the Words with Friends (WWF) dictionary.