off the topic

extraneous immaterial inappropriate inconsequential insignificant pointless trivial unimportant unnecessary unrelated

foreign garbage impertinent inapplicable inapposite inappurtenant inapropos inapt inconsequent not connected with not germane not pertaining to off the point out of order out of place outside remote unapt unconnected without reference

appropriate consequential essential important meaningful necessary needed relevant significant substantial useful valuable worthwhile

pertinent related

beside the point extraneous immaterial impertinent inconsequential not connected with not germane not pertaining to off the point pointless trivial unconnected unimportant