-ior: junior, savior, warrior
-ious: bilious, religious, rubiginous
-ish: admonish, boarish, deminish
-ism: deism, communism, socialism
-ist: dermatologist, optimist, optometrist
corpus: corporation, corpse, corpuscle
cracy: autocracy, aristocracy, democracy, meritocracy
cran: cranium, craniology, craniosacral
crat: aristocrat, bureaucrat, democrat
cred: credible, credit, credence, incredulous
poly-: polygamy, polygon, polypeptide
post-: posterior, posthumous, postpartum
pre-: prepare, predict, preposition, preview
prot(o)-: protoplasm, prototype, protozoa
pseudo-: pseudonym, pseudopod, pseudoscience