Mammoth Uncensored Word List:
54 - 13 letter words starting with am

amakwerekwere amalgamations amarantaceous amathophobics amativenesses ambassadorial ambidexterity ambidexterous ambiguousness ambisexuality ambitiousness ambivalencies ambrosiaceous ambulophobics ameliorations amenabilities amiablenesses amicabilities aminoaciduria aminophylline amitriptyline amitryptyline ammunitioning amniocenteses amniocentesis amorousnesses amorphousness amortisations amortisements amortizations amortizements amphiblastula amphibologies amphictyonies amphidiploids amphidiploidy amphigastrium amphiploidies amphiprostyle amphistomatal amphistomatic amphitheaters amphitheatral amphitheatres amphitheatric amphitrichous amplification amplificatory ampullosities amusingnesses amusivenesses amychophobics amygdalaceous amyloidosises