difficile à dire

C'est difficile à dire.

It's difficult to say.

— Le Fabuleux Destin d'Amélie Poulain (2001)

Difficile à dire, Kay.

Hard to say, Kay.

— Men in Black (1997)

Difficile à dire.

It's hard to say.

— La Famille Tenenbaum (2001)

Il est soit brillant, soit chanceux, difficile à dire.

He's either brilliant or lucky, it's hard to say.

Si j’avais grandi, c’était difficile à dire.

If I’d grown up, it would have been hard to say.

Ça, c'est difficile à dire.

That's hard to say.

— Manon des sources (1986)

Difficile à dire, c'est un homme très occupé.

Hard to say, he's a very busy man.

— Still Life (2006)

C'est difficile à dire maintenant.

It's hard to say right now.

— Mourir pour survivre (2018)

C'est vrai, les affaires de cœur, c'est difficile à dire !

It’s true, matters of the heart are hard to put into words!

— Insaisissables 2 (2016)

Quant à ce que pensait alors l'inspecteur de police ce serait difficile à dire.

As for what the police inspector was thinking at the time, that would be hard to say.