Pynchon fans would argue that the typewriter is a perfect metaphor for the post-modernist. Lapsed technology.
On page 251 of Against the Day I found a word that fools Scrivener as well as the OED: "aptotic." Thinks it's from the Greek and something about declination. Not sure. My typewriter doesn't have a spell checker.
This is not from TP:
If you're after a gift that's refined,
Showing insight and presence of mind,
Ask around in the town
For an aptotic noun
Such as "sheep," since it can't be declined.