=Obesity=--o-bĕs´i-ty, not o-bē´si-ty.
=Obligatory=--ŏb´li-ga-to-ry, not ŏb-lĭg´a-to-ry.
=Often=--ŏf´n, not ŏf´tĕn.
=Omega=--o-mē´ga or o-mĕg´a, not ŏm´e-ga. Worcester
allows the first only.
=Onerous=--ŏn´er-ous, not ō´ner-oŭs.
=Only=--ōn´ly, not ŭn´ly.
=Onyx=--ō´nyx, not ŏn´yx.
=Opal=--ō´-pal, not ō-păl´ nor ō-pawl´.
=Opponent=--op-pō´nent, not ŏp´po-nent.
=Ordnance=, not _ordinance_, when cannon, artillery, etc., are
intended. _Ordinance_ is a rule established by authority.
=Orgeat=--ôr´zhat or ôr´zhā, not ôr´je-at. Worcester gives
ôr´zhat.
=Orthoepy=--ôr´tho-e-py, not ôr-thō´e-py.
=Orthoepist=--ôr´tho-e-pist, not ôr-thō´e-pist.
=Overflowed=, not _overflown_.