soldier in battle is obnoxious to danger.

_Occasion_ for _Induce_, or _Cause_. "His arrival occasioned a great
tumult." As a verb, the word is needless and unpleasing.

_Occasional Poems_. These are not, as so many authors and compilers
seem to think, poems written at irregular and indefinite intervals,
but poems written for _occasions_, such as anniversaries, festivals,
celebrations and the like.

_Of Any_ for _Of All_. "The greatest poet of any that we have had."

_Offhanded_ and _Offhandedly_. Offhand is both adjective and adverb;
these are bastard forms.

_On the Street_. A street comprises the roadway and the buildings at
each side. Say, in the street. He lives in Broadway.

_One Another_ for _Each Other_. See _Each Other_.

_Only_. "He only had one." Say, He had only one, or, better, one only.
The other sentence might be taken to mean that only he had one; that,
indeed, is what it distinctly says. The correct placing of only in a
sentence requires attention and skill.

_Opine_ for _Think_. The word is not very respectably connected.

_Opposite_ for _Contrary_. "I hold the opposite opinion." "The
opposite practice."