outdated C2+

/ˌaʊtˈdeɪtəd/ no longer current or useful; obsolete

outbalance C2+

/ˌaʊtˈbæləns/ to outweigh or exceed in weight, value, or importance

outermost C2+

/ˈaʊtɚmoʊst/ furthest from the center; most external

outburst C2+

/ˈaʊtbɝst/ a sudden violent release of emotion or energy

outclass C2+

/ˌaʊtˈklæs/ to be far superior to; to surpass decisively in quality or skill