His lame-o attitude ruined the meeting.

The old marsh was said to be haunted by a solitary will-o'-wisp that led travelers astray at night.

right-o, I'll start the presentation now.

The company purchased a comprehensive D&O policy to protect its executives.

Please h/o while I check the file.

They found a battered billy-o at the back of the closet and decided to restore it.

Riya d/o Sharma submitted her passport application yesterday.

She passed her O level in mathematics with top marks.

During the preflight briefing, the F/O reviewed the emergency procedures with the crew.

Linguists often cite W. O. when referring to a variant of WO.