プログレッシブ和英中辞典(第4版)の解説
ありがたがる【有り難がる】
❶〔感謝する〕be grateful ((to a person for a thing))
彼は妻の心遣いをとても有り難がった
He was very thankful [grateful] to his wife for her thoughtfulness./He greatly appreciated his wife's thoughtfulness.
❷〔もったいながる〕
彼の説教はあまり有り難がられなかった
No one thought much of his sermon.