This is the 14769th most frequent Polish word.
rad
Glad; pleased.
Here, "rad" is used to express doubt about feeling glad regarding a situation.
Nie wiem, czy jestem rad z takiego obrotu spraw.
I don't know if I am glad with such a turn of events.
Here, "rad" is used to express gladness or happiness about a situation.
Jestem bardzo rad, że mogłem cię dziś zobaczyć.
I am very glad that I could see you today.
In this sentence, "rad" indicates a content feeling regarding an event that happened.