OXFORD 9000
📚 noun • entry_id 34892

archaism

/ˈɑː.keɪ.ɪz.əm/
Meanings (ES + gloss)
arcaísmo
An archaic word, style, etc.
He had the fastidiousness, the preciosity, the love of archaisms, of your true decadent.
In this text, the word "methinks" appears to be a deliberate archaism.