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increasingly; more and more; decreasingly (when declining); less and less
「益」 has another reading with different meanings.
技術の進歩で生活は益便利になった。
Life has become increasingly convenient with technological progress.
雨は益激しくなってきている。
The rain is getting more and more intense.
彼の活躍は益注目を集めている。
His achievements are attracting more and more attention.