Word Power # 4 word meaning examples intra within intramural, intravenous, intracellular, intramuscular, intrastate semi, hemi half semicircle, hemisphere, semiannual, semicolon sphere ball shape hemisphere, spherical, atmosphere, biosphere non not nonfiction, nontoxic, nonsense, nonstop, nonviolence ceed, cede, cess go proceed, precede, exceed, recede, intercede, excess, recess mis, mit send mission, permit, admit, remit, submit, commit, emit, emission, permission, admission, submission contra against contradict, contrast, contrary, contraindicate astro star astronaut, astronomy, astrology, astrophysics, astronomer mono one monopoly, monogram, monologue, monorail, monocle, monoplane di, du two duo, dual, duplex, duplicate, duet, dioxide