憾
They all expressed regret over her death.
He expressed regret over the affair.
I found it truly regrettable that he should take offence.
I am very sorry to inform you that she died.
It is regrettable that few people should walk today because of the development of traffic facilities.
Your behavior leaves much to be desired.
It is a great pity that you don't know it.
I'm sorry to say, but the service isn't very good.
I regret to inform you that I will be unable to keep our appointment for February 27.
Tom's report leaves much to be desired.
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The search results are provided by the wonderful Jisho API which itself uses various data sources which you can find on the jisho's website. The data concerning the kanji strokes are provided by the KanjiVG project, under the CC BY 3.0 FR license. I also use Tatoeba to provide example sentences and Kuroshiro to obtain the furiganas and romajis versions of the sentences.
If you find any vices, errors or malfunctions, please let me know so that I can correct them.