No one is quite sure when he made it his unofficial duty.

This designation was bestowed upon Logansport by former First Lady Laura Bush, as one of her last unofficial duties before leaving the White House.

Part of my 'unofficial' duty is to make sure the crown prince amuses himself with the right, or should I say wrong, type of woman.

His unofficial duty is to chat with the customers.

"Then let's just call it part of my unofficial duty."

This way the crew was able to keep him aboard with unofficial duties until he was of legal age to enlist in the Navy on his own.

He served critic for agriculture, the Canadian Wheat Board and western economic diversification, and had unofficial duties for the western provinces.

Edward continued with unofficial duties for James and he may have disbursed bribes to MPs on behalf of the French ambassador.

Then, late last year, news reached corporate headquarters that a couple of counselors in other cities were taking on new, unofficial duties: doing research on local economies and actually helping clients find jobs, rather than just prepare them for their searches.

Carolin was a weak telepath at best, and his duties, both official and unofficial, dancing attendance upon his uncle and sitting judgment at the cortes, occupied the greater portion of his attention.