Definition of wistfully in English:
 wistfully
adverb ˈwɪs(t)fʊliˈwɪs(t)f(ə)liˈwɪs(t)fəli
With a feeling of vague or regretful longing.
 he smiled wistfully as he spoke of her
 I wistfully recall moments of my youth
 Example sentencesExamples
-  Wistfully through the sunshine, Wistfully through the rain, They watch for his returning Who will never return again.
 -  At first, she looked around her, suspiciously, as if distrusting eaves-droppers; then she gazed wistfully into the face of her attentive companion.
 -  Wistfully she watched Mrs Toland tying little Constance's sash and straightening her flower-crowned hat for church.
 -  He looks wistfully down from the second-story balcony of the smallpox pavilion.
 -  Titles and badges are exercised as such a weapon, to which you and I look up wistfully.
 
  Definition of wistfully in US English:
 wistfully
adverbˈwis(t)fəlēˈwɪs(t)fəli
With a feeling of vague or regretful longing.
 he smiled wistfully as he spoke of her
 I wistfully recall moments of my youth
 Example sentencesExamples
-  Wistfully she watched Mrs Toland tying little Constance's sash and straightening her flower-crowned hat for church.
 -  Wistfully through the sunshine, Wistfully through the rain, They watch for his returning Who will never return again.
 -  Titles and badges are exercised as such a weapon, to which you and I look up wistfully.
 -  He looks wistfully down from the second-story balcony of the smallpox pavilion.
 -  At first, she looked around her, suspiciously, as if distrusting eaves-droppers; then she gazed wistfully into the face of her attentive companion.