Page 1: abiogenesis, trichomoniasis, ubiquitous, pulchritudinous, congratulations, influentialness, supercilious, outrageous, possibilities, courageous, acrimonious, beauteous, audacious, amniocentesis, impecunious, ridiculousness, ostentatious, pertinacious, communications, aeronautics, abstemiousness, atherosclerosis, apprehensiveness, abecedarius, pusillanimous, mischievousness, parthenogenesis, autonomous, sanctimonious, accommodations, auspicious, carnivorousness, apatosaurus, disingenuous, sequacious, subcutaneous, elephantiasis, adequateness, dermatosclerosis, abdominousness, salubriousness, libidinousness, hilariousness, diverticulitis, anthropomorphous, discourteous, contumacious, accountableness, loquacious, and aeromechanics
Suffix: -s. List of words that end in s.