Is it permissible for a husband to marry another woman without the first wife's knowledge or approval?

MarriagePolygamy
Is it permissible for a husband to marry another woman without the first wife's knowledge or approval?
Amina Inloes, Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the... Answered 6 years ago

Yes, unless it is a special case, like her being ahl al-kitab or if she is his wife's niece.

However, do not be allured by the promise of secrecy. Women (almost) always know!