#Declension
Someone on Twitter asked why it's not opi

It's a neuter 3rd declension word, not a masculine 2nd declension word, which is what goes from -us to -i
October 2, 2026 at 5:01 PM
Most Latin loanwords are first declension feminine (-a/-ae) or second declension masculine (-us/-i), so it's honestly completely understandable to assume an -us word would become an -i

But nope! Opera. Nexus.
October 2, 2026 at 5:07 PM
Thence to a watch, thence into a weakness,
Thence to a lightness, and by this declension,
Into the madness wherein now he raves,
And all we mourn for.
April 5, 2026 at 6:04 PM
Platner hasn't had a redemption arc, more of a declension arc
He is comparing Byrd, an actual klan member who had a redemption arc, to a guy who has always been a lefty and drunkenly got a skull and bones tat that turned out to have been used by Nazis. It is insane to compare those two things. What arc is he referring to? This is insane.
November 2, 2025 at 3:58 AM
"Regex" and "Mutex" are 3rd declension masculine Latin nouns, so their plurals are "regices" and "mutices," respectively
April 30, 2025 at 4:15 PM
To make things even more complicated (Latin is a hard language!!) the plural of nexus is actually just nexus

Because that's a *fourth* declension word
October 2, 2026 at 5:02 PM
If your partner is a medievalist you should expect that they will walk you through the joys of declining personal names in Latin on the day you discover that The National Archives has just made your life so much easier.

www.nationalarchives.gov.uk/latin/refere...
How to decline personal names - Latin
First declension Second declension Third declension First declension First declension names used in this tutorial Alicia, -e (f.) Alice Amabila, -e (f.) Amabila Anna, -e (f.) Anna Christina, -e (f.) C...
www.nationalarchives.gov.uk
May 8, 2025 at 3:03 PM
German declension kicks my ass but I think this overview is correct
November 3, 2025 at 7:33 PM
Second declension *neuter*, on the other hand, is -um/-a

So that's why "bacteria" is the plural, and an individual lil E. coli is just a "bacterium"
October 2, 2026 at 5:10 PM
doing Erudition
August 27, 2025 at 11:49 PM
Declension narratives are all around for those with eyes to see
Googled the Princeton-legacy Princeton professor who wrote that bad piece about generative AI in the New Yorker to try to figure out what his deal is and this 2001/2025 before-and-after makes for a real capsule history of the 21st century so far
June 29, 2025 at 10:08 PM
each of them KNOWING the other would ABSOLUTELY use the WRONG DECLENSION on whatever papal name the Pope who is about to be elected will choose in the official announcement if they were the one to write it.
May 7, 2025 at 4:55 AM
Ancient Greek students when you ask them the nominative plural ending for first declension nouns:
Every time Bad Bunny said “Ey” in the Halftime Show
February 17, 2026 at 11:26 AM
Astrum should be the singular, Astra plural

2nd declension neuter, like bacterium, bacteria
October 2, 2026 at 6:37 PM
Is the plural of doofus 'doofi'? What declension is doofus?
September 30, 2026 at 3:09 PM
im explaining finnish noun declension in the DMs
November 24, 2024 at 3:00 PM
I just saw the hashtag gladiatorii and was like what the heck declension is that
November 16, 2024 at 10:31 PM
Go-to your happy place, Fade. Think about ablative absolutes using fifth declension nouns. Maybe with a fourth declension ablative of means tucked inside.

(I maintain that the one failing of ancient Greek is its lack of an ablative.)
March 9, 2026 at 12:08 PM
By 'literary declension', i mean the methodical examination of a subject, through which all its variable forms and structures are deduced, in order to fully conceive it in its entirety.
May 9, 2026 at 1:45 AM
horcruces? horcrujes? what declension is horcrux
August 24, 2023 at 4:21 AM
Four words you want whispered in your ear?

I’m not sure in the declension but something like “Federatio Russo Delenda Est”
July 1, 2025 at 4:22 PM
Here's a fun reminder: Homo is Latin for "human".
(third declension masculine noun)
June 18, 2025 at 6:52 PM
I regret to inform you Akkadian is a case-based declension language :(((((
May 14, 2026 at 7:35 PM
Declension
March 19, 2025 at 2:50 AM
That third declension ablative
February 9, 2025 at 3:50 AM