Quotes About Endearingly

Darling: the popular form of address used in speaking to a member of the opposite sex whose name you cannot at the moment remember.

I hesitate a moment. Wearing his dressing gown seems a bit cutesy. A bit Let me put on your great big manly shirt and allow the sleeves to flap endearingly around my fingers. But I have no choice.

what does that mean, that word "mavourneen"?