> AI can give me five synonyms for any Latin word, because that’s just statistics, and it can regurgitate rules about metrical length of syllables, but it can’t give me synonyms matching a particular metrical pattern,

I love when people say that AI can't do things that it can do.

me: give me a synonym for overconfident that is a dactyl

GPT5: A good dactylic synonym for overconfident is arrogant.

It scans as Ár-ro-gant (stressed, unstressed, unstressed), which makes it a perfect dactyl.

Other possible dactyls, though a bit less direct, include:

Ignorant (if you want to imply careless overconfidence)

Insolent (if you want a sharper, defiant edge)

Want me to give you a list of dactylic synonyms with slightly different shades of meaning (e.g., boastful, careless, reckless)?