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powerful; strong; forceful; vigorous
reassuring; encouraging
彼の力強い言葉に勇気をもらった。
I was encouraged by his powerful words.
選手たちの応援メッセージはとても力強かった。
The athletes' messages of support were very powerful.
今回のスピーチは以前ほど力強くない印象だった。
This speech gave the impression of not being as forceful as before.