いとこ

⟨ito₁ko₁⟩ → */itʷokʷo/ → /itoko/

Cognate with and by extension of Old Japanese いとこ (ito₁ko₁, “close, familial, or beloved person”).[1]

• (Tokyo) いと​こ [ìtóꜜkò] (Nakadaka – [2])[1][2]
• IPA^(key): [ito̞ko̞]

いとこ • (itoko) 

1. one's cousin (may be spelled in kanji to indicate the gender and relationship with the person in question):
   1. 従兄弟: a male cousin
      1. 従兄: an older male cousin
      2. 従弟: a younger male cousin
   2. 従姉妹: a female cousin
      1. 従姉: an older female cousin
      2. 従妹: a younger female cousin
   3. 従兄妹: an older male cousin and younger female cousin
   4. 従姉弟: an older female cousin and younger male cousin

For quotations using this term, see Citations:いとこ.

• はとこ (hatoko, “second cousin”)

From stem ito- cognate with modern 愛しい (itoshii, “dear, precious”) +‎ 子 (ko₁, “child”).

いとこ (ito₁ko₁)

1. a person close, familial, or otherwise beloved (to the speaker, etc.)
2. (by extension) one's cousin

For quotations using this term, see Citations:いとこ.

• Japanese:
  • 愛子 (itoko, “beloved”), in modern Japanese dictionaries
  • いとこ (itoko, “cousin”)