tiresomeness

Noun

uncountable usually

the state or quality of being tiresome; wearisomeness; tediousness.

Japanese Meaning

退屈さ / 煩わしさ / 疲れさせる性質

After listening to the long, repetitive lecture, the tiresomeness of the topic made it hard to stay awake.

長くて繰り返しの多い講義を聞いた後、その話題の退屈さで眠気をこらえるのが難しかった。

Sense（1）

the state or quality of being tiresome; wearisomeness; tediousness.

tiresomenesses

（ plural ）