[zephyr9]

Old software is depreciated. To deprecate software would be to call it names.

[jodrellblank]

"Deprecated features for Windows client" - https://learn.microsoft.com/en-us/windows/whats-new/deprecat...

[emodendroket]

Before the 19th Century "ignore" meant "to not know," in accordance with its Latin origins, if you're looking for other words to try and turn back the clock on against the overwhelming tide of modern usage.