For medievalists or anyone with more than a passing interest, the most unusual element of the Voynich manuscript – Beinecke Ms. 408, known to many as “the most mysterious manuscript in the world” – is its handwritten text.
Although several of its symbols (especially the ligatures) are recognizable, adopted for the sake of economy by the medieval scribes, the words formed by its neatly grouped characters do not appear to correspond to any known language.
It was long believed that the text was a form of code – one which repeated attempts by crypt­o­graphers and linguists failed to penetrate.
As someone with long experience of interpreting the Latin inscriptions on classical monuments and the tombs and brasses in English parish churches,
I recognized in the Voynich script tell-tale signs of an abbreviated Latin format. But interpretation of such abbreviations depends largely on the context in which they are used.
I needed to understand the copious illustrations that accompany the text.

https://www.the-tls.co.uk/articles/public/voynich-manuscript-solution/