彼は末っ子だ。

彼は末っ子だ。

He is the baby of the family.

彼(かれ)は末(すえ)っ子(こ)だ。

Kare wa suekko da.

彼 (かれ)

he; him; his; boyfriend

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

末っ子 (すえっこ)

youngest child

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: ヒ、かれ、かの、か.の

Meanings: he, that, the

Readings: マツ、バツ、すえ

Meanings: end, close, tip, powder, posterity

Readings: シ、ス、ツ、こ、 -こ、ね

Meanings: child, sign of the rat, 11PM-1AM, first sign of Chinese zodiac