This is the 103rd most frequent Catalan word.
mai
"Mai" means "never" in English.
Here, 'mai' is used with 'no' to express a strong negation in reference to time, meaning 'never'.
Mai no he anat a França.
I have never been to France.
In this sentence, 'mai' is used in a hypothetical or conditional context to mean 'ever'.
Si mai tens algun dubte, truca'm.
If you ever have any doubt, call me.
'Mai' is again used for emphasis in a negation context, highlighting the impossibility of the action.