I find the following in the New York Review of Books archives:

The cult of the same obtains in American letters, and if you don't regard Henry James and Fitzgerald with "holy assinity," you can't be any good yourself.

do you think this is just a(nother*) typo for asininity (which belabors the normal sense), or is this a *really obscure word?

*google gets a few dozen hits, almost all of which are obvious typos