She was very elegant in dress and manner, and she looked maturely young.
"The Lion's Share"
E. Arnold Bennett
You will easily guess what has brought me to this maturely considered resolution.
"Correspondence of Wagner and Liszt, Volume 1"
Francis Hueffer (translator)
And, above all, the two great Romantic motives, Adventure and Love, are quite maturely present in it.
"The English Novel"
George Saintsbury