減退

In a sentence

• 最近の経済状況では、消費者の購買意欲が減退しています。

  Under the current economic circumstances, consumer purchasing motivation is declining.

  The term "減退" here refers to the decrease or decline in the consumers' purchasing intention or motivation.

• 疲労が溜まり、仕事への集中力が減退した。

  Accumulated fatigue has led to a decline in focus on work.

  In this context, "減退" signifies the reduced levels of concentration or focus due to fatigue.

• 彼の学業への興味が年を追うごとに減退しているようだ。

  It appears that his interest in his studies is waning year by year.

  Here, "減退" is used to denote the gradual reduction or loss of interest over time.