It's apparently a word but I'd say it's quite uncommon. I played around with google ngram viewer and had a hard time coming up with a word that is less common. But I finally came up with "astrophotographic".
E: "unsurpassingly" is way down there too
Re:Twitter was down
by t0astbread on Friday July 12, 2019 @04:17AM
(#20419144)
It's common in German, so I figured it wouldn't be uncommon in English. Oh well :)
Re:Twitter was down
by edflsafoiewq on Thursday July 11, 2019 @07:38PM
(#20416882)
It's very common in Biblical criticism (transliterated from German).
dict.cc (my source of truth for English vocab) says it's a word: https://www.dict.cc/?s=tendentially