No, the word overdue is not an adverb.The word overdue is an adjective.
The past tense of "overdue" is "overdue."
By that it means overdue as in you have to pay to stop it from being overdue so basically its expired why whats overdue because it depends
well its easy a rottweiler
The library fined me for returning my books overdue.
The library charges a fine for each book that is returned overdue.
nonshort overdue ;)
long-overdue
"Overdue" can function as an adjective or an adverb.
Say "Your account is overdue."
The puppies will be three quarters Rottweiler, one quarter Shepherd. (75% Rottweiler, 25% Shepherd).
rottweiler