Literal translation
to have an air of two airs
Meaning
to have an ambiguous, unreadable expression
Explanation
The expression plays on the repetition of the word èr, meaning air, face, or expression: to have an air of two airs is to wear a look that seems torn between two different expressions without settling clearly on either, which makes it impossible to read with any certainty. This ambiguous face can reflect a genuinely divided mood, unease, inner hesitation, or, on the contrary, a deliberate concealment that keeps others from guessing what the person actually thinks. A now rarer variant, to have an air between two airs, makes this in-between idea even more explicit, stressing the intermediate position, neither clearly one nor clearly the other. The expression belongs to the everyday register of observing others, used to comment, with a touch of puzzlement or suspicion, on a face that will not give up its secret. It shows Provençal's fondness for wordplay built on repeating the same term.