Sentence:  The conversation taking place in a cramped corridor at the Stadium of Light had turned to the lack of English players on view on Saturday afternoon. Martin Jol barely paused for thought before answering a <WSD>perennially</WSD> vexed question. "It's a problem," said Fulham's manager. "You have to deal with it." 
Meaning of the word marked with <WSD> tags:  constantly; with frequent recurrence