From Proto-Japonic *tanay (“seed”).
*tane
- seed
- penis
- Northern Ryukyuan:
- Kikai: 種 (θanï, “seed”)
- Kunigami: 種 (thanī, “penis”)
- Northern Amami Ōshima: 種 (θane, θanï, “seed”)
- Okinawan: 種 (tani, “seed, penis”)
- Okinoerabu: 種 (θani, θanī, “seed”)
- Southern Amami Ōshima: 種 (θanï, “seed”)
- Tokunoshima: 種 (θanï, “seed”)
- Yoron: 種 (tani, “seed”)
- Southern Ryukyuan:
- Miyako: 種 (tani, “seed, penis”)
- Yaeyama: 種 (tani, “seed, penis”)
- Yonaguni: 種 (tani, “seed, penis”)
- Thorpe, Maner Lawton (1983) Ryūkyūan Language History[1], Doctoral dissertation. University of Southern California, page 325