大人 (おとな) — adult

大人 adult

Frequency #520 Frequency rank among common Japanese words. Lower number = more common. Grade 1 Japanese school grade level in which this kanji is taught. Grade 1 is first year of elementary school. 2 characters 熟字訓 jukujikun 熟字訓 (jukujikun) — The pronunciation applies to the whole word, not individual kanji. na-adjective Part of speech (JMdict: adj-na, adj-no, n)

otona

Pitch高低アクセント — Tokyo-dialect pitch accent. The number is the drop position: 0 = heiban (no drop), 1 = atamadaka (drops after 1st mora), N = drops after Nth mora. The line above each mora marks high pitch; below, low. おとな[0] heiban 平板

Synth audio is approximate — the diagram is the canonical reference.