疲れていたので寝た。

疲れていたので寝た。

As I was tired, I went to bed.

疲(つか)れていたので寝(ね)た。

Tsukareteita node neta.

疲れる (つかれる)

to get tired; to tire; to be worn out (e.g. of well used objects); to starve

ので (ので、んで)

that being the case; because of ...; the reason is ....; given that...

寝る (ねる)

to lie down; to go to bed; to lie in bed; to sleep (lying down); to sleep (with someone, i.e. have intercourse); to lie idle

Readings: ヒ、つか.れる、 -づか.れ、つか.らす

Meanings: exhausted, tire, weary

Readings: シン、ね.る、ね.かす、い.ぬ、みたまや、や.める

Meanings: lie down, sleep, rest, bed, remain unsold