Mammoth Uncensored Word List:
106 - 9 letter words starting with ja

jabberers jabbering jabbingly jaborandi jacaranda jacchuses jacinthes jackalled jackaroos jackasses jackboots jackeroos jacketing jackfruit jackknife jacklight jackplane jackrolls jackscrew jackshaft jacksmelt jacksmith jacksnipe jackstaff jackstays jackstone jackstraw jacobuses jacquards jacquerie jactation jaculated jaculates jaculator jadedness jaggaries jaggedest jaggeries jaghirdar jailbirds jailbreak jaileress jailhouse jailmates jailoress jakfruits jalapenos jaloppies jalousied jalousies jalousing jambalaya jambiyahs jambokked jambolana jambolans jamborees jampacked jampanees jangliest janglings janissary janitress januaries japanised japanises japanized japanizes japanners japanning japonicas jararacas jararakas jargoneer jargonels jargoning jargonise jargonish jargonist jargonize jarlsberg jarosites jarovised jarovises jarovized jarovizes jarringly jasperise jasperize jasperoid jasperous jaspidean jaspilite jaundiced jaundices jauntiest javelinas javelined jawbation jawboners jawboning jayhawker jaywalked jaywalker jazerants jazziness