This is the 54th most frequent Romanian word.
lor
"Their" or "to them."
"Lor" shows possession, indicating that the opinion belongs to 'them'.
Opinia lor este validă.
Their opinion is valid.
"Lor" indicates possession and shows that the books belong to 'them'.
Le-am dat cărțile lor.
I gave them their books.
"Lor" is used as a pronoun to refer to the indirect object, denoting 'them' as the recipients of the thanks.