Sentence:  He took an <WSD>off</WSD> day for fishing.  an <WSD>off</WSD> year in politics; the <WSD>off</WSD> season 
Meaning of the word marked with <WSD> tags:  Designating a time when one is not strictly attentive to business or affairs, or is absent from a post, and, hence, a time when affairs are not urgent.