In disagreement with (4)
(Other definitions for anti that I've seen before include "Adversary" , "Against, informally" , "One who is against (something)" , "Not in favor of" , "Negative vote" .)
(Other definitions for at odds that I've seen before include "In disagreement or conflict - like bookies?" , "Not in agreement" , "Disagreeing" , "At variance (with)" , "On bad terms" .)