ただ気分が落ち込んでいるだけさ。

ただ気分が落ち込んでいるだけさ。

You've just been down in the dumps.

ただ気分(きぶん)が落(お)ち込(こ)んでいるだけさ。

Tada kibun ga ochikondeiru dake sa.

只 (ただ、タダ)

ordinary; common; usual; free of charge; unaffected; as is; safe; only; merely; just; simply; but; however; nevertheless

気分 (きぶん)

feeling; mood

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

落ち込む (おちこむ)

to feel down (sad); to be in a slump (e.g. business, economy); to be in an unfavourable condition; to fall into (e.g. a hole)

丈 (だけ)

only; just; merely; simply; no more than; nothing but; alone; as (e.g. as soon as, as much as); worth

さ (さ)

-ness (nominalizing suffix indicating degree or condition); (sentence end, mainly masc.) indicates assertion; come; come now

Readings: キ、ケ、いき

Meanings: spirit, mind, air, atmosphere, mood

Readings: ブン、フン、ブ、わ.ける、わ.け、わ.かれる、わ.かる、わ.かつ

Meanings: part, minute of time, segment, share, degree, one's lot, duty, understand, know, rate, 1%, chances, shaku/100

Readings: ラク、お.ちる、お.ち、お.とす

Meanings: fall, drop, come down, village, hamlet

Readings: -こ.む、こ.む、こ.み、 -こ.み、こ.める

Meanings: crowded, mixture, in bulk, included, (kokuji)