Such loveliness in living thing Frodo had never seen before nor imagined in his mind; and he was both surprised and abashed to find that he had a seat at Elrond’s table among all these folk so high and fair.
There are no more uses of "abashed" in the book.
Show samples from other sources
She was a little abashed, a little nervous: Maybe I’m being silly, but ….
Gillian Flynn -- Gone Girl
’Abashed the Devil stood, And felt how awful goodness is.’