Sentence:  The erratic behaviour of Hariri now is largely explained by the fact that his best days may be behind him, given his long absences from the country for security reasons, his declining Saudi business interests, some local challenges to his <WSD>tepid</WSD> leadership in recent municipal elections, and his decline in stature in the eyes of his Saudi backers. 
Meaning of the word marked with <WSD> tags:  Uninterested; exhibiting little passion or eagerness.