Outmoded means no longer in use because better ways exist. Outmoded methods, outmoded attitudes, look outmoded.
It says something has been overtaken rather than that it never worked, which is a fairer criticism than it sounds. The mode in it is the French for fashion, so outmoded is out of fashion with the practical part meant seriously.
1adjectiveoutmodedNo longer in use because better ways exist.
“The factory still uses outmoded machines that break down every week.”
outmoded is a quality.
outmode comes from out- + mode.
Etymology from Wiktionary, CC BY-SA