不ふ断だん

noun which may take the genitive case particle 'no', na-adjective, noun

constant; persistent; unremitting; ceaseless

Only when written 不断

Formal or written use, especially in collocations such as 不断の努力, emphasizing that something continues without stopping or without slackening.

• 問もん題だいの解かい決けつには不ふ断だんの努ど力りょくが必ひつ要ようだ。

  Solving the problem requires constant effort.

noun, na-adjective

indecisiveness

Only when written 不断

Rare as a standalone word in modern Japanese; most learners will encounter this idea in compounds such as 優柔不断.

• 「不ふ断だん」は、優ゆう柔じゅう不ふ断だんのように「決けつ断だんできないこと」を表あらわす場ば合あいがある。

  不斷 can sometimes mean an inability to decide, as in 優柔不断.

noun which may take the genitive case particle 'no', noun, adverb

usual; normal; everyday; habitual; ordinary

Only when written 普段

Everyday modern usage is written 普段 or sometimes ふだん; this sense under 不断 is now written as 普段. It can function adverbially as in 普段は and before の as in 普段の.

See also: 普段

• 普ふ段だんは電でん車しゃで通つう勤きんしています。

  I usually commute by train.

• 普ふ段だんの服ふく装そうで来きてください。

  Please come in your usual clothes.